Question

The variable resistor used to vary current in a circuit is called ____________

a) transformer

b) potentiometer

c) rheostat

d) generator​

Answer 1

Answer:

The Variable resistor used to vary current in DC Circuit is called RHEOSTAT.

Rheostat, adjustable resistor used in applications that require the adjustment of current or the varying of resistance in an electric circuit. The rheostat can adjust generator characteristics, dim lights, and start or control the speed of motors.

Answer 2

Answer:

c) rheostat is the correct option