MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 12583 Mcqs, each offering curated multiple-choice questions to sharpen your Joint Entrance Exam - Main (JEE Main) knowledge and support exam preparation. Choose a topic below to get started.
| 6201. |
In the figure given below, the current passing through \[6\,\Omega \] resistor is [Manipal MEE 1995] |
| A. | 0.40 ampere |
| B. | 0.48 ampere |
| C. | 0.72 ampere |
| D. | 0.80 ampere |
| Answer» C. 0.72 ampere | |
| 6202. |
The equivalent resistance of the following infinite network of resistances is [AIIMS 1995] |
| A. | Less than \[4\,\Omega \] |
| B. | \[4\,\Omega \] |
| C. | More than \[4\,\Omega \] but less than \[12\,\Omega \] |
| D. | \[12\,\Omega \] |
| Answer» D. \[12\,\Omega \] | |
| 6203. |
Two wires of same metal have the same length but their cross-sections are in the ratio \[3:1\]. They are joined in series. The resistance of the thicker wire is \[10\,\Omega \]. The total resistance of the combination will be [CBSE PMT 1995] |
| A. | \[40\,\Omega \] |
| B. | \[\frac{40}{3}\Omega \] |
| C. | \[\frac{5}{2}\Omega \] |
| D. | \[100\,\Omega \] |
| Answer» B. \[\frac{40}{3}\Omega \] | |
| 6204. |
A student has 10 resistors of resistance ?r?. The minimum resistance made by him from given resistors is [AFMC 1995] |
| A. | 10 r |
| B. | \[\frac{r}{10}\] |
| C. | \[\frac{r}{100}\] |
| D. | \[\frac{r}{5}\] |
| Answer» C. \[\frac{r}{100}\] | |
| 6205. |
Three resistances, each of 1 ohm, are joined in parallel. Three such combinations are put in series, then the resultant resistance will be [MP PMT 1994] |
| A. | 9 ohm |
| B. | 3 ohm |
| C. | 1 ohm |
| D. | \[\frac{1}{3}ohm\] |
| Answer» D. \[\frac{1}{3}ohm\] | |
| 6206. |
The current in the adjoining circuit will be [IIT 1983; CPMT 1991, 92; MH CET 2002; Pb. PMT 2001; Kerala PMT 2004] |
| A. | \[\frac{1}{45}ampere\] |
| B. | \[\frac{1}{15}ampere\] |
| C. | \[\frac{1}{10}ampere\] |
| D. | \[\frac{1}{5}ampere\] |
| Answer» D. \[\frac{1}{5}ampere\] | |
| 6207. |
A battery of e.m.f. 10 V is connected to resistance as shown in figure. The potential difference \[{{V}_{A}}-{{V}_{B}}\] between the points A and B is [MP PMT 1994] |
| A. | \[-2V\] |
| B. | \[2V\] |
| C. | \[5V\] |
| D. | \[\frac{20}{11}V\] |
| Answer» C. \[5V\] | |
| 6208. |
Four wires AB, BC, CD, DA of resistance 4 ohm each and a fifth wire BD of resistance 8 ohm are joined to form a rectangle ABCD of which BD is a diagonal. The effective resistance between the points A and B is [MP PMT 1994] |
| A. | 24 ohm |
| B. | 16 ohm |
| C. | \[\frac{4}{3}ohm\] |
| D. | \[\frac{8}{3}ohm\] |
| Answer» E. | |
| 6209. |
If a resistance \[{{R}_{2}}\] is connected in parallel with the resistance R in the circuit shown, then possible value of current through R and the possible value of \[{{R}_{2}}\] will be |
| A. | \[\frac{I}{3},\,R\] |
| B. | \[I,\,2R\] |
| C. | \[\frac{I}{3},\,2R\] |
| D. | \[\frac{I}{2},\,R\] |
| Answer» E. | |
| 6210. |
In the given circuit, the potential of the point E is [MP PMT 2003] |
| A. | Zero |
| B. | \[-\,8\,V\] |
| C. | \[-\,4/3\,V\] |
| D. | 4/3 V |
| Answer» D. 4/3 V | |
| 6211. |
In the given figure, when key K is opened, the reading of the ammeter A will be |
| A. | 50 A |
| B. | 2 A |
| C. | 0.5 A |
| D. | \[\frac{10}{9}A\] |
| Answer» C. 0.5 A | |
| 6212. |
The current from the battery in circuit diagram shown is [IIT 1989] |
| A. | 1 A |
| B. | 2 A |
| C. | 1.5 A |
| D. | 3 A |
| Answer» B. 2 A | |
| 6213. |
In the figure shown, the total resistance between A and B is |
| A. | \[12\,\Omega \] |
| B. | \[4\,\Omega \] |
| C. | \[6\,\Omega \] |
| D. | \[8\,\Omega \] |
| Answer» E. | |
| 6214. |
An infinite sequence of resistance is shown in the figure. The resultant resistance between A and B will be, when \[{{R}_{1}}=1\,ohm\] and \[{{R}_{2}}=2\,ohm\] [MP PET 1993] |
| A. | Infinity |
| B. | \[1\,\Omega \] |
| C. | \[2\,\Omega \] |
| D. | \[1.5\,\Omega \] |
| Answer» D. \[1.5\,\Omega \] | |
| 6215. |
A wire of resistance R is divided in 10 equal parts. These parts are connected in parallel, the equivalent resistance of such connection will be [CPMT 1973, 91] |
| A. | 0.01 R |
| B. | 0.1 R |
| C. | 10 R |
| D. | 100 R |
| Answer» B. 0.1 R | |
| 6216. |
Four resistances are connected in a circuit in the given figure. The electric current flowing through 4 ohm and 6 ohm resistance is respectively [MP PET 1993] |
| A. | 2 amp and 4 amp |
| B. | 1 amp and 2 amp |
| C. | 1 amp and 1 amp |
| D. | 2 amp and 2 amp |
| Answer» E. | |
| 6217. |
In the network of resistors shown in the adjoining figure, the equivalent resistance between A and B is |
| A. | 54 ohm |
| B. | 18 ohm |
| C. | 36 ohm |
| D. | 9 ohm |
| Answer» E. | |
| 6218. |
The equivalent resistance of the arrangement of resistances shown in adjoining figure between the points A and B is [CPMT 1990; BVP 2003] |
| A. | 6 ohm |
| B. | 8 ohm |
| C. | 16 ohm |
| D. | 24 ohm |
| Answer» C. 16 ohm | |
| 6219. |
Resistances of 6 ohm each are connected in the manner shown in adjoining figure. With the current 0.5 ampere as shown in figure, the potential difference \[{{V}_{P}}-{{V}_{Q}}\] is [CPMT 1989] |
| A. | 3.6 V |
| B. | 6.0 V |
| C. | 3.0 V |
| D. | 7.2 V |
| Answer» D. 7.2 V | |
| 6220. |
Resistors of 1, 2, 3 ohm are connected in the form of a triangle. If a 1.5 volt cell of negligible internal resistance is connected across 3 ohm resistor, the current flowing through this resistance will be [CPMT 1984] |
| A. | 0.25 amp |
| B. | 0.5 amp |
| C. | 1.0 amp |
| D. | 1.5 amp |
| Answer» C. 1.0 amp | |
| 6221. |
Two resistors are connected in series in parallel. The equivalent resistance in the two cases are 9\[ohm\] and 2\[ohm\] respectively. Then the resistances of the component resistors are [CPMT 1984] |
| A. | 2\[ohm\] and 7\[ohm\] |
| B. | 3\[ohm\] and 6\[ohm\] |
| C. | 3\[ohm\] and 9\[ohm\] |
| D. | 5\[ohm\] and 4\[ohm\] |
| Answer» C. 3\[ohm\] and 9\[ohm\] | |
| 6222. |
Four wires of equal length and of resistances 10 ohms each are connected in the form of a square. The equivalent resistance between two opposite corners of the square is [NCERT 1977] |
| A. | 10 \[ohm\] |
| B. | 40\[ohm\] |
| C. | 20\[ohm\] |
| D. | 10/4\[ohm\] |
| Answer» B. 40\[ohm\] | |
| 6223. |
A cell of negligible resistance and e.m.f. 2 volts is connected to series combination of 2, 3 and 5 ohm. The potential difference in volts between the terminals of 3 ohm resistance will be [CPMT 1976] |
| A. | 0.6 |
| B. | 2/3 |
| C. | 3 |
| D. | 6 |
| Answer» B. 2/3 | |
| 6224. |
The equivalent resistance of resistors connected in series is always [CPMT 1984; MP PMT 1999] |
| A. | Equal to the mean of component resistors |
| B. | Less than the lowest of component resistors |
| C. | In between the lowest and the highest of component resistors |
| D. | Equal to sum of component resistors |
| Answer» E. | |
| 6225. |
Two resistors of resistance \[{{R}_{1}}\] and \[{{R}_{2}}\] having \[{{R}_{1}}>{{R}_{2}}\] are connected in parallel. For equivalent resistance \[R\], the correct statement is [CPMT 1978; KCET (Med.) 2000] |
| A. | \[R>{{R}_{1}}+{{R}_{2}}\] |
| B. | \[{{R}_{1}}<R<{{R}_{2}}\] |
| C. | \[{{R}_{2}}<R<({{R}_{1}}+{{R}_{2}})\] |
| D. | \[R<{{R}_{1}}\] |
| Answer» E. | |
| 6226. |
Lamps used for household lighting are connected in |
| A. | Series |
| B. | Parallel |
| C. | Mixed circuit |
| D. | None of the above |
| Answer» C. Mixed circuit | |
| 6227. |
Given three equal resistors, how many different combination of all the three resistors can be made [NCERT 1970] |
| A. | Six |
| B. | Five |
| C. | Four |
| D. | Three |
| Answer» D. Three | |
| 6228. |
Two resistances are joined in parallel whose resultant is \[\frac{6}{8}\]ohm. One of the resistance wire is broken and the effective resistance becomes \[2\,\Omega \]. Then the resistance in ohm of the wire that got broken was [CPMT 1976; DPMT 1982] |
| A. | 3/5 |
| B. | 2 |
| C. | 6/5 |
| D. | 3 |
| Answer» D. 3 | |
| 6229. |
Referring to the figure below, the effective resistance of the network is [NCERT 1973, 75] |
| A. | 2\[r\] |
| B. | 4\[r\] |
| C. | 10\[r\] |
| D. | \[5r/2\] |
| Answer» E. | |
| 6230. |
A current of 2 A flows in a system of conductors as shown. The potential difference \[({{V}_{A}}-{{V}_{B}})\] will be [CPMT 1975, 76] |
| A. | \[+2\,V\] |
| B. | \[+1\,V\] |
| C. | \[-1\,V\] |
| D. | \[-2\,V\] |
| Answer» C. \[-1\,V\] | |
| 6231. |
In the given circuit, the voltmeter records 5 volts. The resistance of the voltmeter in ohms is [KCET 2005] |
| A. | 200 |
| B. | 100 |
| C. | 10 |
| D. | 50 |
| Answer» C. 10 | |
| 6232. |
By using only two resistance coils-singly, in series, or in parallel one should be able to obtain resistances of 3, 4, 12 and 16 ohms. The separate resistances of the coil are [KCET 2005] |
| A. | 3 and 4 |
| B. | 4 and 12 |
| C. | 12 and 16 |
| D. | 16 and 3 |
| Answer» C. 12 and 16 | |
| 6233. |
Three resistances of magnitude 2, 3 and 5 ohm are connected in parallel to a battery of 10 volts and of negligible resistance. The potential difference across \[3\,\Omega \] resistance will be [CPMT 1972] |
| A. | 2 volts |
| B. | 3 volts |
| C. | 5 volts |
| D. | 10 volts |
| Answer» E. | |
| 6234. |
In the circuit given E = 6.0 V, R1 = 100 ohms, R2 = R3 = 50 ohms, R4 = 75 ohms. The equivalent resistance of the circuit, in ohms, is [KCET 2005] |
| A. | 11.875 |
| B. | 26.31 |
| C. | 118.75 |
| D. | None of these |
| Answer» D. None of these | |
| 6235. |
The current in a simple series circuit is 5.0 amp. When an additional resistance of 2.0 ohms is inserted, the current drops to 4.0 amp. The original resistance of the circuit in ohms was [KCET 2005] |
| A. | 1.25 |
| B. | 8 |
| C. | 10 |
| D. | 20 |
| Answer» C. 10 | |
| 6236. |
When a wire of uniform cross-section a, length l and resistance R is bent into a complete circle, resistance between any two of diametrically opposite points will be [CBSE PMT 2005] |
| A. | \[\frac{R}{4}\] |
| B. | \[\frac{R}{8}\] |
| C. | \[4R\] |
| D. | \[\frac{R}{2}\] |
| Answer» B. \[\frac{R}{8}\] | |
| 6237. |
For the network shown in the figure the value of the current \[i\] is [Kerala PMT 2005] |
| A. | \[\frac{9V}{35}\] |
| B. | \[\frac{5V}{18}\] |
| C. | \[\frac{5V}{9}\] |
| D. | \[\frac{18V}{5}\] |
| Answer» C. \[\frac{5V}{9}\] | |
| 6238. |
Five equal resistances each of resistance R are connected as shown in the figure. A battery of V volts is connected between A and B. The current flowing in AFCEB will be [CBSE PMT 2004] |
| A. | \[\frac{3V}{R}\] |
| B. | \[\frac{V}{R}\] |
| C. | \[\frac{V}{2R}\] |
| D. | \[\frac{2V}{R}\] |
| Answer» C. \[\frac{V}{2R}\] | |
| 6239. |
The equivalent resistance and potential difference between A and B for the circuit is respectively [Pb. PMT 2003] |
| A. | 4 W, 8 V |
| B. | 8 W, 4 V |
| C. | 2 W, 2 V |
| D. | 16 W, 8 V |
| Answer» B. 8 W, 4 V | |
| 6240. |
If you are provided three resistances 2 W, 3 W and 6 W. How will you connect them so as to obtain the equivalent resistance of 4 W [DPMT 2003] |
| A. | |
| B. | |
| C. | |
| D. | None of these |
| Answer» D. None of these | |
| 6241. |
A parallel combination of two resistors, of 1 W each, is connected in series with a 1.5 W resistor. The total combination is connected across a 10 V battery. The current flowing in the circuit is [DCE 2004] |
| A. | 5 A |
| B. | 20 A |
| C. | 0.2 A |
| D. | 0.4 A |
| Answer» B. 20 A | |
| 6242. |
In circuit shown below, the resistances are given in ohms and the battery is assumed ideal with emf equal to 3 volt. The voltage across the resistance R4 is [UPSEAT 2004; Kerala PMT 2004] |
| A. | 0.4 V |
| B. | 0.6 V |
| C. | 1.2 V |
| D. | 1.5 V |
| Answer» B. 0.6 V | |
| 6243. |
If three resistors of resistance 2W, 4W and 5 W are connected in parallel then the total resistance of the combination will be [Pb. PMT 2004] |
| A. | \[\frac{20}{19}\Omega \] |
| B. | \[\frac{19}{20}\Omega \] |
| C. | \[\frac{19}{10}\Omega \] |
| D. | \[\frac{10}{19}\Omega \] |
| Answer» B. \[\frac{19}{20}\Omega \] | |
| 6244. |
The effective resistance between the points \[A\] and \[B\] in the figure is [MP PET 1994] |
| A. | \[5\,\Omega \] |
| B. | \[2\,\Omega \] |
| C. | \[3\,\Omega \] |
| D. | \[4\,\Omega \] |
| Answer» C. \[3\,\Omega \] | |
| 6245. |
If a rod has resistance 4 W and if rod is turned as half cycle then the resistance along diameter [BCECE 2004] |
| A. | 1.56 W |
| B. | 2.44 W |
| C. | 4 W |
| D. | 2 W |
| Answer» D. 2 W | |
| 6246. |
An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the lengths and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be [AIEEE 2004] |
| A. | 3 |
| B. | 1/3 |
| C. | 8/9 |
| D. | 2 |
| Answer» C. 8/9 | |
| 6247. |
Six equal resistances are connected between points P, Q and R as shown in the figure. Then the net resistance will be maximum between [IIT-JEE (Screening) 2004] |
| A. | P and Q |
| B. | Q and R |
| C. | P and R |
| D. | Any two points |
| Answer» B. Q and R | |
| 6248. |
A wire has a resistance of 6 W. It is cut into two parts and both half values are connected in parallel. The new resistance is .... [KCET 2004] |
| A. | 12 W |
| B. | 1.5 W |
| C. | 3 W |
| D. | 6 W |
| Answer» C. 3 W | |
| 6249. |
An unknown resistance R1 is connected in series with a resistance of 10 W. This combinations is connected to one gap of a metre bridge while a resistance R2 is connected in the other gap. The balance point is at 50 cm. Now, when the 10 W resistance is removed the balance point shifts to 40 cm. The value of R1 is (in ohm) [KCET 2004] |
| A. | 60 |
| B. | 40 |
| C. | 20 |
| D. | 10 |
| Answer» D. 10 | |
| 6250. |
Which arrangement of four identical resistances should be used to draw maximum energy from a cell of voltage V [MP PMT 2004] |
| A. | |
| B. | |
| C. | |
| D. | |
| Answer» C. | |