railway RRB Technician Grade 1 Mock Test 2024 Physics Electromagnetic Oscillations and Alternating Current Transformers
In a transformer the primary coil has 800 turns and the secondary coil has 400 turns. If a 200 Volt AC supply is applied at the primary coil then the output voltage at the secondary coil will be.
1
100 V
2
400 V
3
50 V
4
200 V