Question

A cell is connected to a 9 ohm resistance.because of which heat of 400 j is produced per second due to current flowing through it. obtain the potential difference applied across the resistance.

Answer 1

P=400 J
R=9 ohm.
P=V^2/R
400=V^2/9
V^2= 3600
V=60

Answer 2

Answer:

Explanation:

Given: R = 9 Ω

H = 400 J

t = 1 s

To find: V = ?

Formula: H = V2

t

R

Solution: H = V2

t

R

400 = V2 × 1

9

3600 = V2

V = √ 3600

V = 60 V