Question

b. If the resistance per unit length of the wire is 0.02 52 cm-¹, how much heat would be produced in the wire if a voltmeter connected across its ends indicates 1.5 V while the current runs for 2 minutes.​

Answer 1

P = V^2 R

P = (1.5)^2 ( 0.0252 x length of wire )

Ans x 2(60)