Question

find the current passing through it

APPROPRIATE ANSWER WILL BE MARKED AS BRAINLIEST

Answer 1

d = 0.2mm
r = d / 2 = 0.1mm

Cross section area = 22/7 × 0.1 × 0.1

= 0.0314mm^2

l = 50cm = 500mm

resistivity = 40 × 10^-6 ohm cm = 40 × 10^-5 ohm mm

Now apply , resistivity = AR / l

R = resistivity × l / A

R = (40 × 10^-5 × 500) / 0.0314

R = (2 × 10^4 × 10^-5) / 0.0314

R = 0.2 / 0.0314 = 6.36ohm

Now, i = V / R

i = 2 / 6.36

i = 0.314A

Thanks