Question

The number of turns in the primary and the secondary coils of a transformer are 1000 and 3000 respectively. If the primary of the coil is connected to 80 volt ac, then what is the potential difference per turn of the secondary coil ?

• A. 240 V
• B. 24 V
• C. 0.24 V
• D. 0.08 V

Answer 1

Answer: (A)

240 V

Given : $\frac{N_P}{N_S}=\frac{1000}{3000}$

Potential difference in primary coil $V_P=80V$
Using $\frac{V_P}{V_S}=\frac{N_P}{N_S}$

$\therefore \frac{80}{V_S}=\frac{1000}{3000}$

$V_S=80\times 3=240V$