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A potential divider is used to given out...

A potential divider is used to given outputs of 2V and 3V form a 5V source, as shown in fig.

Which combination of resistance `R_1, R_2, and R_3` gives the correct voltages?

A

2

B

2

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
For cell A, the current I flows opposite to the direction of its
emf.
Potential difference is `epsilon + ir = epsilon +((n -2)epsilon)/(nr)r`
`=epsilon[1+(n - 2)/(n)] =epsilon((2n-2)/(n))`
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