Science, asked by nithu5726, 11 months ago

a copper wire of length 1km when connected to 200v power supply draws a current of 2A. if the resistivity of material is 1.72ohm.calculate cross sectional area of wire​

Answers

Answered by shrravan7
2

Answer:

Explanation:

V = IR

V = 200

I = 2A

R = 200/2

100

R = r*l/a

R = 100

r = 1.72

L = 1000m

100 = 1.72*1000/a

100 = 1720/a

100a = 1720

a = 1720/100

a = 17.2 m^2

Hope you understand

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