Moving Charges and Magnetism questions
775 published questions with worked solutions.
- A circular coil of radius 4 cm having 80 turns carries a current of 2 A. It is placed in uniform magnetic field of intensity 0.1...
- A circular coil of radius 40 mm consists of 250 turns of wire in which the current is 20 mA. The magnetic field in the centre of...
- Two concentric circular coils of ten turns each are situated in the same plane. Their radii are 20 cm and 40 cm and they carry...
- A long straight wire of radius 2 mm carries a current of 32 A. The magnetic field at a distance of (1/ ) mm from the axis will be
- Inside the solenoid magnetic field lines are :
- A long solenoid of length L has a mean diameter D. It has n layers of winding of N turns each. If it carries current I, the...
- There are 50 turns of a wire in every cm length of solenoid. If 4 A current is flowing in the solenoid, the approximate value of...
- If k is the restoring torque per unit twist of the fiber and is the deflection of the coil of M.C.G. then the restoring torque is...
- The torque acting on the coil is maximum if it is suspended in
- When a current carrying coil is placed in a uniform magnetic field of induction B, then a torque acts on it. If I is the current,...
- If a coil carrying an electric current is placed in a uniform magnetic field then
- To make the field radial in a moving coil galvanometer
- When a current is passed in a moving coil galvanometer the coil gets deflected because
- The lamp and scale arrangement of M.C.G. is used to measure the
- In a moving coil galvanometer, we use a radial magnetic field so that the galvanometer scale is
- In a moving coil galvanometer, the turning effect on the coil is proportional to
- In a moving coil galvanometer, the deflection of the coil is related to the electric current I by the relation
- The coil of a sensitive M.C.G. swings too far on both sides. This movement can be quickly stopped by
- The current flowing through the coil of M.C.G. depends on
- Which of the following equation gives the current flowing through the coil of M.C.G.?
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