Question

A transfirmer being used to operate a 6V 48W heater from 240V a.c. supply. Given that Ns=100

Calculate the number of turns in primary coil .

Answer 1

As per the given question,

Operating voltage = 6V,

Power = 48W

Supply voltage = 240V AC

Ns=100

We know that $(\frac{E_1}{E_2})=(\frac{N_1}{N_2})$

$\Rightarrow N_2=\frac{E_2\times N_1}{E_1}$

$\Rightarrow N_2=\frac{240\times 100}{6}=4000$

Hence, total number of turns in the coil is 4000.