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प्रश्न
How much current is drawn by the primary of a transformer connected to 220 V supply when it delivers power to a 110 V − 550 W refrigerator?
उत्तर
Given, Vs = 110 V, P = 550 W
P=VPIP
`I_p=P/V_p=550/220=2.5A`
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संबंधित प्रश्न
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