Teaching HTET PGT Level 3 - 2024 Mock Test Physics Electromagnetic Oscillations and Alternating Current Transformers
A step down transformer connected to an ac mains supply of 220 V is made to operate at 11 V, 44 W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit ?
1
4 A
2
0.2 A
3
0.4 A
4
2 A