JEE · NEET Previous Year Question
A heating coil is labelled The coil is cut in half and the two pieces are joined in parallel to the same source. The energy now liberated per second is
Topic: NEET PYQ
Answer: B. Full step-by-step solution below.
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Correct answer: B
Solution
(b) Power of heating coil 100 W and voltage (V) 220 volts. When the heating coil is cut into two equal parts and these parts are joined in parallel the resistance of the coil is reduced to one‐fourth of the previous value. Therefore energy liberated per second becomes 4 times. i.e.More Current Electricity PYQs
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