NEET · Physics · STD 12 -6. Electromagnetic induction
A step down transformer connected to an ac mains supply of \(220\, \mathrm{~V}\) is made to operate at \(11 \,\mathrm{~V}, 44 \,\mathrm{~W}\) lamp. Ignoring power losses in the transformer, what is the current in the primary circuit? (In \(\mathrm{~A}\))
- A \(0.2\)
- B \(0.4\)
- C \(2\)
- D \(4\)
Answer & Solution
Correct Answer
(A) \(0.2\)
Step-by-step Solution
Detailed explanation
Power loss \(=0\) \(\eta=100 \%\)
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