A potentiometer having the potential gradient of 2 mV/cm is used to me – McqOptions

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1.	A potentiometer having the potential gradient of 2 mV/cm is used to measure the difference of potential across a resistance of 10 ohm. If a length of 50 cm of the potentiometer wire is required to get the null point, the current passing through the 10 ohm resistor is (in mA) [AMU (Med.) 2000]
A.	1
B.	2
C.	5
D.	10
Answer» E.

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