Question

A rheostat can work as potential divider only when
is kept constant?
a..current
b..voltage
c..Resistance
d..None​

Answer 1

A rheostat can work as a potential divider only when the current is kept constant.

Option (a) is correct.

Explanation:

• A rheostat is used to change the resistance of the circuit.
• The purpose of using a rheostat is to change the resistance which in turn changes ​the current of the circuit.
• In general, a rheostat is a variable resistor that divides the voltage and also used for, limiting the current in the circuit.