Question

# The primary and the secondary coils of a transformer contain 10 and 100 turns, respectively. The primary coil is connected to battery that supplies a constant voltage of 1.5 volts. The voltage across the secondary coil is

A
1.5V
B
0.15V
C
0.015 V
D
15V

Solution

## The correct option is A 15VNumber of turns in primary coil  $$N_p = 10$$Number of turns in secondary coil  $$N_s = 100$$Voltage in primary coil  $$V_p = 1.5 \ V$$Voltage in secondary coil  $$V_s = \dfrac{N_s}{N_p}V_p$$$$\implies \ V_s = \dfrac{100}{10}\times 1.5 = 15 \ V$$Correct answer is option D.Physics

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