(a) Write Joule’s law of heating.
(b) Two lamps, one rated 100 W; 220 V, and the other 60 W; 220 V, are connected
in parallel to electric mains supply. Find the current drawn by two bulbs from
the line, if the supply voltage is 220 V.
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when current passes till the resistor the heat develops in the conductor.this development fo heat in conductor is known as joules law of heating.
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Answer:
(a) According to Joule's law, heat energy produced in a resistors is directly proportional to the square of the electric current flowing through the resistor.
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