COMEDK · Physics · 23. Alternating Current
A current of \(5 \mathrm{~A}\) is flowing at \(220 \mathrm{~V}\) in the primary coil of a transformer. If the voltage produced in the secondary coil is \(2200 \mathrm{~V}\) and \(50 \%\) of power is lost, then the current in the secondary will be
- A \(2.5 \mathrm{~A}\)
- B \(5 \mathrm{~A}\)
- C \(0.25 \mathrm{~A}\)
- D \(0.5 \mathrm{~A}\)
Answer & Solution
Correct Answer
(C) \(0.25 \mathrm{~A}\)
Step-by-step Solution
Detailed explanation
For a transformer, \(\begin{aligned} I_{P}=5 \mathrm{~A}, V_{P} &=220 \mathrm{~V} \\ V_{S}=2200 \mathrm{~V} \end{aligned}\) Since, \(50 \%\) power is lost, hence power at secondary side,…
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