52 questions in Chapter 4 Moving Charges and Magnetism - HI MCQ!

A moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is?

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A wire is placed parallel to the lines of force in a magnetic field and a current flows in the wire. Then?

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A particle of mass m and charge q enters a magnetic field B perpendicularly with a velocity v. The radius of the circular path described by it will be?

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A current carrying loop is placed in a uniform magnetic field. The torque acting on it does not depend upon?

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The magnetic field around a long straight current carrying wire is?

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Which of the following is not correct about cyclotron?

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The operation of the cyclotron is based on the fact that the time for one revolution of an ion is independent of its speed or radius of its orbit.
The charged particles and ions in cyclotron can move on any arbitrary path.
Cyclotron uses both electric and magnetic fields in combination to increase the energy of charged particles.
It is a machine to accelerate charged particles or ions to high energies.

The gyro-magnetic ratio of an electron in an H-atom, according to Bohr model, is?

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A current carrying closed loop of an irregular shape lying in more than one plane when placed in uniform magnetic field, the force acting on it?

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In a cyclotron, a charged particle?

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If the beams of electrons and protons move parallel to each other in the same direction, then they?

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