a) A current loop in a uniform magnetic field experiences A net torque b) A curr

Question

a) A current loop in a uniform magnetic field experiences

A net torque

b) A current loop in an external magnetic field will rotate so that its own magnetic field is

anti-parallel to the external field

c) Is the simple motor motion similar to the simple pendulum motion?

Yes

d) To construct a motor its very important to take into account

of decreasing friction and a well balanced coil.

e) If the current and magnetic field are kept constants then torque can be increased by

Explanation / Answer

(a) A net Torque

(b) parallel to the external Field

(c) No

(d) decreasing friction and well balanced coil

(e) increasing either area or number of turns in the loop

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