A rheostat differs from potentiometer in the respect that it_____________?

Related Mcqs:

The substances which have a large number of free electrons and offer a low resistance are called____?

A. insulators B. inductors C. semi-conductors D. conductors...

A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is_____________?

A. 6.4 A, 6.9 A B. 6.4 A, 9.6 A C. 4.6 A, 6.9 A D. 4.6 A, 9.6 A...

In a series circuit with unequal resistances______________?

A. the highest resistance has the most of the current through it B. the lowest resistance has the highest voltage drop C. the lowest resistance has the highest current D. the highest resistance has the highest voltage drop...

When one leg of parallel circuit is opened out the total current will______________?

A. reduce B. increase C. decrease D. become zero...

A field of force can exist only between_____________?

A. two molecules B. two ions C. two atoms D. two metal particles...