| 1. | If a charged particle moves through a magnetic field perpendicular to it ? | |
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momentum is constant but energy changes.
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energy is constant but momentum changes.
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momentum as well as energy are constant.
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both momentum and energy of particle change.
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Report Question| 2. | A strong magnetic field is applied on a stationary electron. Then the electron ? | |
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moves opposite to the direction of the field.
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moves perpendicular to the direction of the field.
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remained stationary.
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moves in the direction of the field.
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| 3. | The nature of parallel and anti-parallel currents are ? | |
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parallel currents attract and antiparallel currents repel.
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both currents repel.
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parallel currents repel and antiparallel currents attract.
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both currents attract.
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| 4. | Energy in a current carrying coil is stored in the form of ? | |
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heat
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electric field
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magnetic field
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dielectric strength
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| 5. | To make the field radial in a moving coil galvanometer ? | |
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coil is wounded on aluminium frame
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poles are cylindrically cut
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magnet is taken in the form of horse-shoe
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the number of turns in the coil is increased
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| 6. | The AC voltage across a resistance can be measured using a ? | |
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moving magnet galvanometer
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potential coil galvanometer
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hot wire voltmeter
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moving coil galvanometer
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| 7. | In cyclotron the gyro radius is ? | |
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inversely proportional to energy
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proportional to momentum
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proportional to energy
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inversely proportional to momentum
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| 8. | If a current is passed through a spring then the spring will ? | |
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remains same
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expand
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compress
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None of these
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| 9. | A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon ? | |
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value of current
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magnetic field
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area of loop
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None of these
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| 10. | A charged particle moving in a uniform magnetic field and losses 4% of its kinetic energy. The radius of curvature of its path changes by ? | |
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12%
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4%
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2%
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10%
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