Physics WAEC

A wire of resistivity 4.40 x 10^-5Ω cm has a cross sectional area of 7.50 x 10^-4 cm². Calculate the length of the wire that will be required to make a 4.0Ω resistor

A. 82.50 cm
B. 68.18cm
C. 15.90cm
D. 11.95cm

Correct Answer: Option B

B. 68.18cm

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6 years ago

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