A step up transformer is connected to an ac mains supply of 220 V to operate at $11000 \mathrm{~V}, 88$ watt…

A step up transformer is connected to an ac mains supply of 220 V to operate at $11000 \mathrm{~V}, 88$ watt. The current in the secondary circuit, ignoring the power loss in the transformer, is
  1. 8 mA
  2. 4 mA
  3. 0.4 A
  4. 4 A

Solution

In secondary circuit, $P=V i$ $\Rightarrow 88=11000 i$ $\Rightarrow \quad i=\frac{88}{11 \times 10^3}=8 \times 10^{-3} \mathrm{~A}$ $\Rightarrow \quad i=8 \mathrm{~mA}$

Asked in: NEET 2024 (Re-NEET)

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