Two bulbs A and B are rated as 100 W at 220V, and the other 60W at 220V respectively. They are connected in parallel to a 220V power supply. Find the current drawn from the supply line. Which bulb will consume more energy? Read the passage given below and answer the following questions from Q5-Q8. The heating effect of current is obtained by transformation of electrical energy in heat energy. Just as mechanical energy used to overcome friction is converted into heat, in the same way, electrical energy is converted into heat energy when an electric current flows through a resistance wire. The heat produced in a conductor, when a current flows through it is found to depend directly on (a) strength of current (b) resistance of the conductor (c) time for which the current flows. The mathematical expression is given by H = I2Rt. The
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bulb B would consume more energy.
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