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The lamp of flash light is 1.5 Omega . I...

The lamp of flash light is `1.5 Omega` . It uses 3 cells each of 1.5 V and internal resistance `0.25 Omega`. What is the net potential difference across the lamp ?

A

1.5 V

B

2.25 V

C

3 V

D

4.5 V.

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