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وارد شوید

JAMB - Physics (2010 - No. 41)

A cell of e.m.f 12V and internal resistance 4Ω is connected to an external resistor of resistance 2Ω. Find the current flow.
5 A
4 A
3 A
2 A

توضیح

I = E/(R+r)
= 12/6 = 2A

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