If length of current carrying conductor increases, what is the effect on the force?
a) increases
b) decreases
c) remain same
d) become zero

A cable is cut to half of its original length. What will be the effect on the increase in its length under a given load ?

As the angle between force and displacement increases, the magnitude of work …………. (remains constant, increases, decreases)

If force and length increases by 4 times, then energy becomes 16 times.

When a conservative force does positive work on a body , the potential energy of the body increases /decreases/ remains unaltered .

After closing the key in above circuit, after some time, a glass rod is inserted in the inductor. Will the brightness of bulb . (a) Give answer with reason. Increase (b) decrease or (c) remain same ?

If the current in an electric bulb increases by 1 %, what will be the change in the power of a bulb ? [Assume that the resistance of the filament of a bulh remains constant]

A compass needle is placed near a current - carrying straight wire . State your observation for the following case and give reason for the same in each case : (1) Direction of electric current in the wire is increased . (2) Magnitude of electric current in the wire is increased . (3) Teh compass needle is displaced away from the straight wire .