The primary winding of a transformer has 500 turns and its secondary has 5000 turns. The primary is connected to an a.c. supply of 20 V, 50 Hz. The secondary will have an output of:
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → 200 V, 50 Hz
Voltage Transformation in a transformer is given by-
$\frac{V_S}{V_P}=\frac{N_S}{N_P}$
where,
$V_S$ → Voltage across the secondary winding.
$V_P=20V$, Voltage across the primary winding.
$N_S=5000$, No. of turns in secondary winding.
$N_P=500$, No. of turns in primary winding.
$\frac{V_S}{20}=\frac{5000}{500}$
$V_S=20.\frac{5000}{500}=20.10=200V$
and, the frequency will remain the same.