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प्रश्न
What is the ideal transformer?
उत्तर
Ideal transformer: The input energy of the transformer is equal to the output energy.
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संबंधित प्रश्न
Derive an expression for ratio of e.m.f.s and currents in terms of number of turns in primary and secondary coil.
Find the ratio of primary and secondary currents in terms of turn ratio in an ideal transformer.
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?
Explain why an induced current must flow in such a direction so as to oppose the change producing it.
Explain the significance of Lenz’s law to show the conservation of energy in electromagnetic induction.
A circular coil of 100 turns with a cross-sectional area of 1 m2 is kept with its plane perpendicular to the magnetic field of 1 T. The magnetic flux linkage is ______.
Transformer works on ______.
The self-inductance of a closely wound coil of 200 turns is 10 mH. Determine the value of magnetic flux through the cross-section of the coil when the current passing through the coil is 4 mA.
Derive the equation for a transformer.
What type of transformer is used in a mobile phone charger?
