MHT CET · Physics · Alternating Current
An 80 W lamp is connected to the secondary of a step-down transformer, where primary is connected to ac mains of 220 V . Assuming the transformer to be ideal, the current in the primary winding is nearly
- A 3.6 A
- B 2.8 A
- C 0.36 A
- D 0.28 A
Answer & Solution
Correct Answer
(C) 0.36 A
Step-by-step Solution
Detailed explanation
\(I_p = P_s / V_p\) \(I_p = 80 \, \text{W} / 220 \, \text{V}\)
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