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The resistivity of potentiometer wire is 40 x 10-8 ohm-metre and its area of cross- section is 8 × 10- 6 m?. If 0.2 ampere current is flowing through the wire, the potential gradient of the wire is A) 10-1 V/m B) 10-2 V/m C) 10-3 V/m D) 10-4 V/m

The resistivity of potentiometer wire is 40 x 10-8 ohm-metre and its area of cross- section is 8 × 10- 6 m?. If 0.2 ampere current is flowing through the wire, the potential gradient of the wire is A) 10-1 V/m B) 10-2 V/m C) 10-3 V/m D) 10-4 V/m

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The resistivity of potentiometer wire is 40 x 10-8 ohm-metre and its area of cross- section is 8 × 10- 6 m?. If 0.2 ampere current is flowing through the wire, the potential gradient of the wire is A) 10-1 V/m B) 10-2 V/m C) 10-3 V/m D) 10-4 V/m
Transcribed Image Text:The resistivity of potentiometer wire is 40 x 10-8 ohm-metre and its area of cross- section is 8 × 10- 6 m?. If 0.2 ampere current is flowing through the wire, the potential gradient of the wire is A) 10-1 V/m B) 10-2 V/m C) 10-3 V/m D) 10-4 V/m
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