An ideal battery of 4 V and resistance R are connected in series in th – McqOptions

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1.	An ideal battery of 4 V and resistance R are connected in series in the primary circuit of a potentiometer of length 1 m and resistance 5 Ω. The value of R to give a potential difference of 5 mV across 10 cm of potentiometer wire is
A.	395 Ω
B.	495 Ω
C.	490 Ω
D.	480 Ω
Answer» B. 495 Ω

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