Question

. The purpose of arheostat is:
a) Increase the magnitude of current only b) Decrease the magnitude of current only
c) Increase or decrease the magnitude of current
d) None of these​

Answer 1

Answer:

the correct option is C

Explanation:

A rheostat is also known as a variable resistor where we can change the resistance of the circuit and its generally used for controlling the amount of current flowing in the circuit.

When resistance is large, it decreases the current in the circuit and when resistance is low then current in the circuit is increased. So, a rheostat can increase as well as decrease the current.