A Wire Has a Length of 2.0 M and a Resistance of 5.0 ω. Find the Electric Field Existing Inside the Wire If It Carries a Current of 10 A. - Physics

Sum

A wire has a length of 2.0 m and a resistance of 5.0 Ω. Find the electric field existing inside the wire if it carries a current of 10 A.

Solution

Given:-

Length of the wire, l = 2 m

Resistance of the wire, R = 5 Ω

Current through the wire, i = 10 A

From Ohm's Law, the potential difference across the wire,

V = iR

∴ V= 10 × 5 = 50 V

Electric field,

$E = \frac{V}{l}$

$= \frac{50}{2}$

$= 25 V/m$

Concept: Ohm’s Law
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APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 10 Electric Current in Conductors
Q 13 | Page 198