Question

Name a device which offered variable resistance in the circuit?

Answer 1

$\large{\underline{\sf{\red{Potentiometer:\rightarrow}}}}$

is used for offered variable resistance in the circuit.

More info.:-

• The Potentiometer is the instrument used to measure the EMF  of the cell.
• Potentiometer is used as a voltage divider in electronic circuit.

• Potentiometer is used in medical equipment.

Answer 2

Answer:

A variable resistance or potentiometer can be used to change the resistance of a circuit. they are used in experiments to measure current voltage Or other parameters by multiple readings. ohmmeter is for measuring a resistance but not change it.

hope it's help you mate