In a step-up transformer,which one of the following statements is correct?
- ANumber of turns in the secondary coil is less than in primary coil
- BVoltage in secondary coil is less than in primary coil
- CCurrent in the primary coil is more than current in the secondary coil
- DCurrent in the primary coil is equal to current in the secondary coil
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$A$ transformer with $80 \%$ efficiency works at $4 \text{ kW}$ and $100 \text{ V}$. If the secondary voltage is $240 \text{ V}$, then the primary current is . . . . . . . (in $A$)
Which of the following statements is correct regarding a step-down transformer?
The alternating voltage induced in the secondary coil of a transformer is mainly due to
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View SolutionIn a step-down transformer,the number of turns in:
The primary and secondary voltage of an ideal step-down transformer is $200 \,V$ and $25 \,V$ respectively. The secondary is connected to a device,which draws a current of $2 \,A$. The current in the primary is (in $\,mA$)
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