Power loss is zero. Hence, output Power is equal to input Power.
So, Input Power, P1=44W
⇒V1i1=P1
⇒i1=V1P1=22044=0.2A
NEET UG 2021 — Physics Electromagnetism
A step down transformer connected to an ac mains supply of 220V is made to operate at 11V,44W lamp. Ignoring power losses in the transformer, what is the current in the primary circuit?
Held on 30 Apr 2021 · Verified 9 Jul 2026.
2A
0.4A
0.2A
4A
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