NEET · Physics · STD 12 -6. Electromagnetic induction
A \(12\,V,60\,W\) lamp is connected to the secondary of a step down transformer, whose primary is connected to ac mains of \(220\,V\). Assuming the transformer to be ideal, \(..........\,A\) is the current in the primary winding.
- A \(0.37\)
- B \(0.27\)
- C \(2.7\)
- D \(3.7\)
Answer & Solution
Correct Answer
(B) \(0.27\)
Step-by-step Solution
Detailed explanation
\(V _{ S } I _{ S }= V _{ P } I _{ P } \text { (ideal Transformer) }\) \(\Rightarrow P _{\text {out }}= P _{ in }\)
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