A primary of transformer has 100 turns an secondary has 500 turns. If input voltage 20 and frequency 50Hz, so the output voltage an frequency are... V and ....... Hz

Options

A. 200,500
B. 100,50
C. 20,50
D. 2,5

Answer

B

Explanation

`N_1/N_2=epsilon_1/epsilon_2`
`therefore epsilon_2=epsilon_1 xx N_1/N_2`
`=20xx5000/500`
`therefore epsilon_2`= 200 V
`therefore` Frequency of transformer remains unchanged.