Which device is used in a circuit to vary the resistance continuously?

Ammete

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Rheostat

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Tapping key

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Galvanometer

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Solution

The correct option is B
Rheostat

A rheostat is a device which is used in a circuit to vary the resistance continously. It is used to adjust the magnitude of the current in a circuit by changing the length of resistance included in the circuit.

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Which device is used in a circuit to vary the resistance continuously?

The correct option is B Rheostat A rheostat is a device which is used in a circuit to vary the resistance continously. It is used to adjust the magnitude of the current in a circuit by changing the length of resistance included in the circuit.

The correct option is B
Rheostat

A rheostat is a device which is used in a circuit to vary the resistance continously. It is used to adjust the magnitude of the current in a circuit by changing the length of resistance included in the circuit.