A 50 Hz ac current of crest value 1 A flows through the primary of a transformer. If the mutual inductance between the primary and secondary be 0.5 H, the crest voltage induced in the secondary is _________.

Fill in the blank with the correct answer from the options given below.

100 V

The crest value of voltage is $ V_2 = M \frac{dI}{dt} = 0.5 \frac{2A}{\frac{1}{2\times 50}} = 100V$

The correct answer is Option (3) → 100 V