A low-loss transformer has 230 V applied to the primary and gives 4 . 6 V in the secondary. The secondary is connected to a load, which draws 5 A of current. The current (in ampere) in the primary is

Question

A low-loss transformer has 230 V applied to the primary and gives 4 . 6 V in the secondary. The secondary is connected to a load, which draws 5 A of current. The current (in ampere) in the primary is, 0 . 1, 1 . 0, 10, 250

MARKS App · Accepted Answer

For the transformer Power output = power input E s i s = E p i p E S E P = i P i S ⇒ i P = E S E P × i S = 4.6 230 × 5 = 0.1 A

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