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WAEC Physics 2011 Paper

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Question : 40

Total: 49

The resistivity, mathit‌P, of a material of length l, cross-sectional area A, resistance R, is given by the equation

mathit‌P=‌
RA
l
mathit‌P=‌
l
RA
mathit‌P=‌
Rl
A
mathit‌P=‌
R
Al

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