Explore topic-wise MCQs in VITEEE.

This section includes 49 Mcqs, each offering curated multiple-choice questions to sharpen your VITEEE knowledge and support exam preparation. Choose a topic below to get started.

1.

In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes, using same supply mains

A. length of heating element should be decreased
B. length of heating element should be increased
C. length of heating element has no effect on heating if water
D. none of the above
Answer» B. length of heating element should be increased
2.

A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb, the heater output will

A. decrease
B. increase
C. remain same
D. heater will burn out
Answer» C. remain same
3.

Which of the following quantities remain the same in all parts of a series circuit ?

A. Voltage
B. Current
C. Power
D. Resistance
Answer» C. Power
4.

The thickness of insulation provided on the conductor depends on

A. the magnitude of voltage on the conductor
B. the magnitude of current flowing through it
C. both (a) and (b)
D. none of the above
Answer» B. the magnitude of current flowing through it
5.

The insulation on a current carrying conductor is provided

A. to prevent leakage of current
B. to prevent shock
C. both of above factors
D. none of above factors
Answer» D. none of above factors
6.

The hot resistance of the bulb’s filament is higher than its cold resistance because the temperature co-efficient of the filament is

A. zero
B. negative
C. positive
D. about 2 ohms per degree
Answer» D. about 2 ohms per degree
7.

A closed switch has a resistance of

A. zero
B. about 50 ohms
C. about 500 ohms
D. infinity
Answer» B. about 50 ohms
8.

Two resistances Rl and Ri are connected in series across the voltage source where Rl>Ri. The largest drop will be across

A. Rl
B. Ri
C. either Rl or Ri
D. none of them
Answer» B. Ri
9.

The four bulbs of 40 W each are connected in series swift a battery across them, which of the following statement is true ?

A. The current through each bulb in same
B. The voltage across each bulb is not same
C. The power dissipation in each bulb is not same
D. None of the above
Answer» B. The voltage across each bulb is not same
10.

Three 60 W bulbs are in parallel across the 60 V power line. If one bulb burns open

A. there will be heavy current in the main line
B. rest of the two bulbs will not light
C. all three bulbs will light
D. the other two bulbs will light
Answer» E.
11.

If a wire conductor of 0.2 ohm resistance is doubled in length, its resistance becomes

A. 0.4 ohm
B. 0.6 ohm
C. 0.8 ohm
D. 1.0 ohm
Answer» B. 0.6 ohm
12.

If a parallel circuit is opened in the main line, the current

A. increases in the branch of the lowest resistance
B. increases in each branch
C. is zero in all branches
D. is zero in the highest resistive branch
Answer» D. is zero in the highest resistive branch
13.

 The resistance of a few meters of wire conductor in closed electrical circuit is

A. practically zero
B. low
C. high
D. very high
Answer» B. low
14.

A 3 Q resistor having 2 A current will dissipate the power of

A. 2 watts
B. 4 watts
C. 6 watts
D. 8 watts
Answer» D. 8 watts
15.

The filament of an electric bulb is made of

A. carbon
B. aluminium
C. tungsten
D. nickel
Answer» D. nickel
16.

In a series circuit with unequal resistances

A. the highest resistance has the most of the current through it
B. the lowest resistance has the highest voltage drop
C. the lowest resistance has the highest current
D. the highest resistance has the highest voltage drop
Answer» E.
17.

 The minimum charge on an ion is

A. equal to the atomic number of the atom
B. equal to the charge of an electron
C. equal to the charge of the number of electrons in an atom (#) zero
Answer» C. equal to the charge of the number of electrons in an atom (#) zero
18.

The rating of a fuse wire is always expressed in

A. ampere-hours
B. ampere-volts
C. kWh
D. amperes
Answer» E.
19.

Insulating materials have the function of

A. preventing a short circuit between conducting wires
B. preventing an open circuit between the voltage source and the load
C. conducting very large currents
D. storing very high currents
Answer» C. conducting very large currents
20.

Varistors are

A. insulators
B. non-linear resistors
C. carbon resistors
D. resistors with zero temperature coefficient
Answer» C. carbon resistors
21.

Which one of the following does not have negative temperature co-efficient ?

A. Aluminium
B. Paper
C. Rubber
D. Mica
Answer» B. Paper
22.

A resistance having rating 10 ohms, 10 W is likely to be a

A. metallic resistor
B. carbon resistor
C. wire wound resistor
D. variable resistor
Answer» D. variable resistor
23.

All of the following are equivalent to watt except

A. (amperes) ohm
B. joules/sec.
C. amperes x volts
D. amperes/volt
Answer» E.
24.

For which of the following ‘ampere second’ could be the unit ?

A. Reluctance
B. Charge
C. Power
D. Energy
Answer» C. Power
25.

Which is the best conductor of electricity ?

A. Iron
B. Silver
C. Copper
D. Carbon
Answer» C. Copper
26.

Ohm’s law is not applicable to

A. vacuum tubes
B. carbon resistors
C. high voltage circuits
D. circuits with low current densities
Answer» B. carbon resistors
27.

Which of the following materials has a negative temperature co-efficient of resistance?

A. Copper
B. Aluminum
C. Carbon
D. Brass
Answer» D. Brass
28.

 Which of the following statement is true both for a series and a parallel D.C. circuit?

A. Elements have individual currents
B. Currents are additive
C. Voltages are additive
D. Power are additive
Answer» E.
29.

Two resistors are said to be connected in series when

A. same current passes in turn through both
B. both carry the same value of current
C. total current equals the sum of branch currents
D. sum of IR drops equals the applied e.m.f.
Answer» B. both carry the same value of current
30.

You have to replace 1500 Q resistor in radio. You have no 1500 Q resistor but have several 1000 Q ones which you would connect

A. two in parallel
B. two in parallel and one in series
C. three in parallel
D. three in series
Answer» C. three in parallel
31.

Which of the following material has nearly zero temperature co-efficient of resistance?

A. Manganin
B. Porcelain
C. Carbon
D. Copper
Answer» B. Porcelain
32.

Current velocity through a copper conductor is

A. the same as propagation velocity of electric energy
B. independent of current strength
C. of the order of a few ^.s/m
D. nearly 3 x 108 m/s
Answer» D. nearly 3 x 108 m/s
33.

A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is

A. 6.4 A, 6.9 A
B. 6.4 A, 9.6 A
C. 4.6 A, 6.9 A
D. 4.6 A, 9.6 A
Answer» C. 4.6 A, 6.9 A
34.

Four wires of same material, the same cross-sectional area and the same length when connected in parallel give a resistance of 0.25 Q. If the same four wires are connected is series the effective resistance will be

A. 1 Q
B. 2 Q
C. 3 Q
D. 4 Q
Answer» E.
35.

The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms, what is the resistance of the other ?

A. 18 Q
B. 36 Q
C. 48 Q
D. 64 Q
Answer» C. 48 Q
36.

A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is

A. 400 Q
B. 600 Q
C. 800 Q
D. 1000 Q
Answer» D. 1000 Q
37.

In a circuit a 33 Q resistor carries a current of 2 A. The voltage across the resistor is

A. 33 V
B. 66 v
C. 80 V
D. 132 V
Answer» C. 80 V
38.

An instrument which detects electric current is known as

A. voltmeter
B. rheostat
C. wattmeter
D. galvanometer
Answer» E.
39.

The resistance of a copper wire 200 m long is 21 Q. If its thickness (diameter) is 0.44 mm, its specific resistance is around

A. 1.2 x 10~8 Q-m
B. 1.4 x 10~8 Q-m
C. 1.6 x 10″”8 Q-m
D. 1.8 x 10″8 Q-m
Answer» D. 1.8 x 10″8 Q-m
40.

 With rise in temperature the resistance of semi-conductors

A. decreases
B. increases
C. first increases and then decreases
D. remains constant
Answer» B. increases
41.

With rise in temperature the resistance of pure metals

A. increases
B. decreases
C. first increases and then decreases
D. remains constant
Answer» B. decreases
42.

The resistance of a conductor varies inversely as

A. length
B. area of cross-section
C. temperature
D. resistivity
Answer» C. temperature
43.

Conductance is reciprocal of

A. resistance
B. inductance
C. reluctance
D. capacitance
Answer» B. inductance
44.

The property of a conductor due to which it passes current is called

A. resistance
B. reluctance
C. conductance
D. inductance
Answer» D. inductance
45.

Out of the following which is an insulating material ?

A. Copper
B. Gold
C. Silver
D. Paper
Answer» E.
46.

Out of the following which is not a poor conductor ?

A. Cast iron
B. Copper
C. Carbon
D. Tungsten
Answer» C. Carbon
47.

The substances which have a large number of free electrons and offer a low resistance are called

A. insulators
B. inductors
C. semi-conductors
D. conductors
Answer» E.
48.

Electric pressure is also called

A. resistance
B. power
C. voltage
D. energy
Answer» D. energy
49.

The S.I. unit of power is

A. Henry
B. coulomb
C. watt
D. watt-hour
Answer» D. watt-hour