A railway compartment is lit up by thirteen lamps each taking 2.1 A at 15 V. The heat generated per second in each lamp will be |
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a) |
4.35 cal |
b) |
5.73 cal |
c) |
7.5 cal |
d) |
2.5 cal |
A railway compartment is lit up by thirteen lamps each taking 2.1 A at 15 V. The heat generated per second in each lamp will be |
|||||||
a) |
4.35 cal |
b) |
5.73 cal |
c) |
7.5 cal |
d) |
2.5 cal |
(c) From Joule’s law, for a current carrying conductor at a definite temperature the rate of production of heat is given by Where Given, Also, |