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An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the length and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be (A) 3 (B) 1/3 (C) 8/9 (D) 2.

An electric current is passed through a circuit containing two wires of the same material, connected in parallel. If the length and radii of the wires are in the ratio of 4/3 and 2/3, then the ratio of the currents passing through the wire will be (A) 3 (B) 1/3 (C) 8/9 (D) 2.

Grade:12

2 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
576-2250_1.PNG
Vikas TU
14149 Points
one year ago
I1/I2=R2/R1=l2/A2 ×A1/l1
=l2/l1 x A1/A2
=1/43×(23)^2
=23×23/43
=12.3.................................

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