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NEET UG PHYSICS MCQ: ALTERNATING CURRENT
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Medium
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Application
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A transformer is having 2100 turns in primary and 4200 turns in secondary. An AC source of 120 V, 10 A is connected to its primary. The secondary voltage and current are
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Correct option: A
240 V,5 A
Option A (240 V,5 A) is correct because the voltage is doubled and the current is halved due to the turns ratio of the transformer.
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Average power in the L-C-R circuit depends upon A generator produces a voltage that is given by , where t is in seconds. The frequency and r.m.s. voltage are In a choke coil, the resistance and resistance are such that