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A cell of emf E and internal resistance ...

A cell of emf E and internal resistance r is connected across an external resistance R. Plot a graph showing the variation of P.D. across R, verses R.

A

35 mA

B

30 mA

C

40 mA

D

20 mA

Text Solution

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The correct Answer is:
B
30 mA
P.d. between two ends of resistance R
`V=3.5-0.5, V=3.0V`
Current in circuit `I=(V)/(R )=(3)/(100)=30mA`
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