MCQOPTIONS
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MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the potential difference between the ends of a conductor of 60 Ohm resistance, when a current of 4 A flows through it? |
| A. | 200 V |
| B. | 240 V |
| C. | Earthquake |
| D. | 150 V |
| E. | None of these |
| Answer» C. Earthquake | |
| 2. |
What current will a bulb draw when connected to 110 V supply line, if the bulb draws a current of 2 A from the 220 V supply line? |
| A. | 0.083333333333333 |
| B. | 0.125 |
| C. | Bedrock |
| D. | 0.0416666666666667 |
| E. | None of these |
| Answer» E. None of these | |
| 3. |
What is the resistance between two points of wire carrying 4 ampere current and has potential difference of 0.2 volt? |
| A. | 0.04 Ohm |
| B. | 0.02 Ohm |
| C. | Clayey |
| D. | 0.06 Ohm |
| E. | None of these |
| Answer» D. 0.06 Ohm | |
| 4. |
The strength of magnetic field produced by a current carrying solenoid does not depend on the: |
| A. | Number of turns in the solenoid. |
| B. | Strength of current in the solenoid. |
| C. | Air is a non-living component of environment. |
| D. | All the above |
| E. | None of these |
| Answer» F. | |
| 5. |
The current flowing in the given circuit diagram is: |
| A. | 1.34 ampere |
| B. | 2.4 ampere |
| C. | Weathering of rocks |
| D. | 2.9 ampere |
| E. | None of these |
| Answer» B. 2.4 ampere | |
| 6. |
Which way does the wire in the diagram below tend to move? |
| A. | Downward |
| B. | Upward |
| C. | Water cycle |
| D. | Towards right |
| E. | None of these |
| Answer» B. Upward | |
| 7. |
An electric motor converts: |
| A. | Heat energy into electrical energy |
| B. | Electrical energy into mechanical energy |
| C. | Burying |
| D. | Electrical energy into heat energy |
| E. | None of these |
| Answer» D. Electrical energy into heat energy | |
| 8. |
The largest force experienced by a current carrying conductor placed in a magnetic field is when the angle between the conductor and the magnetic field is: |
| A. | \[30{}^\circ \] |
| B. | \[45{}^\circ \] |
| C. | Midday |
| D. | \[60{}^\circ \] |
| E. | None of these |
| Answer» D. \[60{}^\circ \] | |
| 9. |
Which of the following is represented by the forefinger of our hand in Fleming's left-hand rule? |
| A. | The direction of current |
| B. | The direction of magnetic field |
| C. | Drought |
| D. | The direction of pressure |
| E. | None of these |
| Answer» C. Drought | |
| 10. |
The function of commutator in an e]ectr5c motor is to: |
| A. | Make contact with the rotation rings. |
| B. | Reverse the direction of current flowing through the coil. |
| C. | (i - C), (ii - A), (iii - D), (iv - B) |
| D. | All the above |
| E. | None of these |
| Answer» C. (i - C), (ii - A), (iii - D), (iv - B) | |
| 11. |
The ____ is the basis of MRL |
| A. | Resistance |
| B. | Bones in the body |
| C. | Juice |
| D. | Pressure |
| E. | None of these |
| Answer» D. Pressure | |
| 12. |
Which of the following is incorrect match? |
| A. | Manganin - Cu, Mn, Ni |
| B. | Constantan - Cu and Sn |
| C. | CNG |
| D. | All the above |
| E. | None of these |
| Answer» C. CNG | |
| 13. |
Who among the following gave Left-hand rule for the direction of force? |
| A. | Fleming |
| B. | Maxwell |
| C. | Throwing garbage in dustbin. |
| D. | Thomson |
| E. | None of these |
| Answer» B. Maxwell | |
| 14. |
In the given figure a solenoid wound on a core of soft iron. Will the end X be a north pole or south pole when the current flows in the direction shown? Change the direction of flow of current. |
| A. | North |
| B. | South |
| C. | Water vapours |
| D. | North-South |
| E. | None of these |
| Answer» C. Water vapours | |
| 15. |
The magnetic field lines produced by a current carrying solenoid is similar to magnetic field produced by a: |
| A. | Straight current carrying conductor |
| B. | Bar Magnet |
| C. | Autumn |
| D. | Both [b] and [c] |
| E. | None of these |
| Answer» E. None of these | |
| 16. |
Where the magnetic field is strongest in a bar magnet? |
| A. | At poles |
| B. | At the centre |
| C. | Christmas |
| D. | Either [a] or [b] |
| E. | None of these |
| Answer» B. At the centre | |
| 17. |
The diagram given below shows a circuit containing a bulb B, a voltmeter V and an ammeter. The voltmeter reading is 5.6 volt and the ammeter reading is 7 ampere. Which of the following options is incorrect for the given circuit diagram? |
| A. | The resistance of the bulb is 0.8 ohm metre. |
| B. | The power of the bulb is 39.2 watt. |
| C. | Wind |
| D. | All the above |
| E. | None of these |
| Answer» B. The power of the bulb is 39.2 watt. | |
| 18. |
An AC generator is connected to an electric appliance. In 10 revolutions of the armature, the current in the appliance changes direction: |
| A. | 5 times |
| B. | 10 times |
| C. | Strong wind with shower |
| D. | 30 times |
| E. | None of these |
| Answer» D. 30 times | |
| 19. |
A device that can be used to produce an electric current in a circuit is a/an: |
| A. | Ammeter |
| B. | Motor |
| C. | Spring |
| D. | Galvanometer |
| E. | None of these |
| Answer» D. Galvanometer | |
| 20. |
Magnetic field lines inside a long current carrying solenoid are: |
| A. | Straight |
| B. | Circular |
| C. | Marble |
| D. | Elliptical |
| E. | None of these |
| Answer» B. Circular | |
| 21. |
Which of the following is the work done in moving a unit charge across two points in an electric circuit? |
| A. | Current |
| B. | Potential difference |
| C. | Snow |
| D. | Resistance |
| E. | None of these |
| Answer» C. Snow | |
| 22. |
How much work is done in moving a charge of 4 coulombs from a point at 110 volts to a point at 120 volts? |
| A. | 20 Joules |
| B. | 40 Joules |
| C. | Animals |
| D. | 20 Newton |
| E. | None of these |
| Answer» C. Animals | |