Efficiency is defined as the ratio of output power and input power ie, η%80⇒ip=Pin Pout ×100= VpipVsis×100=220×ip2×440×100=5 A
NEET UG 2010 — Physics Electromagnetism
A 220 V input is supplied to a transformer. The output circuit draws a current of 2.0 A at 440 V. If the efficiency of the transformer is 80%, the current drawn by the primary windings of the transformer is
Held on 30 Apr 2010 · Verified 9 Jul 2026.
3.6 A
2.8 A
2.5 A
5.0 A
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