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JEE Main20241 Feb 2024Evening ShiftPhysicsAlternating CurrentActual

A transformer has an efficiency of 80 % and works at 10 V and 4 kW . If the secondary voltage is 240 V , then the current in the secondary coil is:

Options

  1. A1 . 59 A
  2. B13 . 33 A
  3. C1 . 33 A
  4. D15 . 1 A

Correct answer

B. 13 . 33 A

Step-by-step solution

Efficiency η = P o u t p u t P i n p u t = E S I S E P I P ⇒ 0 . 8 = 240 I S 4000 ⇒ I S = 3200 240 = 13 . 33 A

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