Question

A …………… is a device by which resistance in a circuit can be varied continuously.
(a) key
(b) switch
(c) rheostat
(d) voltmeter

  • Category: Current Electricity Class 9 ICSE
WhatsApp

Answer

(c) rheostat

Reason — A rheostat is a device by which resistance in a circuit can be varied continuously. It is used to adjust the magnitude of current in a circuit by changing the length of the resistance wire included in the circuit.

Was this answer helpful?

Didn't liked the above answer ?

Text Generation Tool

💡 Some Related Questions