Question

Plzzz help i will be very thankful for ur kind response

Answer 1

4

EXPLANATION

R1 = ROW ×L/A1. R2 =ROW ×L/A2

ROW =A1×R1 / L. ROW =A2 ×R2 / L

EQ1 EQ2

GIVEN IS

r1 =1.5MM. r2=1.5/2mm

A1 = PIE ×1.5 ×1.5. A2 =PIE ×0.75 ×0.75

A1 = 2.25. A2 = 0.525

R1 = 3 /i1. R2=3/i2 (v=iR)

SUBSTITUTE ALL IN EQ1 & 2

WE WILL GET

(3/i1) × 2.25 /L. (3/i2) ×0.525 /L

By simplifying, we can get

i1/i2 = 4 .