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The number of turns in primary and secondary coils of a transformer are 100 and 20 respectively. If an alternating potential of 200 volt is applied to the primary, the induced potential in secondary will be
The ratio of secondary to primary turns is $9:4.$ If power input is $P$, what will be the ratio of power output (neglect all losses) to power input
Voltage in the secondary coil of a transformer does not depend upon.
A transformer has turn ratio 100/1. If secondary coil has 4 amp current then current in primary coil is
In a step-up transformer the turn ratio is 1:10. A resistance of 200 ohm connected across the secondary is drawing a current of 0.5 A. What is the primary voltage and current
Large transformers, when used for some time, become hot and are cooled by circulating oil. The heating of transformer is due to
In a step-up transformer the voltage in the primary is 220 V and the current is 5A. The secondary voltage is found to be 22000V. The current in the secondary (neglect losses) is
In a transformer, number of turns in the primary are 140 and that in the secondary are 280. If current in primary is 4A then that in the secondary is
A transformer has 100 turns in the primary coil and carries 8 A current. If input power is one kilowatt, the number of turns required in the secondary coil to have 500V output will be
An ideal transformer has 500 and 5000 turn in primary and secondary windings respectively. If the primary voltage is connected to a 6V battery then the secondary voltage is

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