12 Physics Current Electricity - Set No : 47 Question No :3
Question No : 3
The
internal resistance of a primary cell is 4 . It generates a current of 0.2 A
in an external resistance of 21  . The rate at which chemical energy
is consumed in providing the current is |
| a) | 0.42 J  | b) | 0.84 J |
| c) | 1 J | d) | 5 J |
Answer No : 3
(c)Chemical
energy consumed per sec = heat energy produced per sec. |