The input power of the transformer is 495 watt and the input current is 2.25 A.
We need to know about the transformer to solve this problem. The transformer is a device that can increase or reduce the voltage. The changed voltage depends on the current and the number of coil turns. It can be written as
Vi / Vs = Ni / Ns = Is / Ii
where Vi is input voltage, Vs is output voltage, Ni is primary turn, Ns is secondary turn, Is i output current and Ii is input current.
From the question above, we know that
Vi = 220 V
Vs = 9330 V
Is = 53.0 mA
By substituting the following parameters, we can calculate the input current
Vi / Vs = Is / Ii
220 / 9330 = 53 / Ii
Ii = 2247.68 mA
Ii = 2.25 A
Find the input power
P = I . V
P = 2.25 . 220
P = 495 watt
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