NEET Physics Question - Current Electricity - Measuring Devices ( Galvanometer, Voltmeter and Ammeter & Meter Bridge )

Assertion (A): Thick metallic strips are used to join wires in a potentiometer.

Reason (R): Metallic strips are used to provide mechanical support to potentiometer wires.

(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)

(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(3) (A) is true but (R) is false

(4) Both (A) and (R) are false

Solution:

Potentiometers use thick metallic strips to minimize their resistance, ensuring negligible potential drop across them compared to the main potentiometer wire. Reason (R) is incorrect; mechanical support is a secondary benefit, not the primary reason. Thus, A is true and R is false.

Rankers Physics

Potentiometer Strips

Solution:

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