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 to it . Obtain the potential difference applied across the resistance.​

Answer 1

Answer:

60 volt.

Explanation:

Given,

Heat (H = 400 J),

Resistance (R= 9 ohm)

and  

time (t=1 sec)

To find the potential difference V= ?

by

Joule's law, H = (V²t)/R

400 = (V²*1 sec)/9ohm

V²=400*9

by solving this, we get

the potential difference as 60 volts.

Hope it will be helpful.

Answer 2

Hi

Plz refer to the attachment for answer..