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प्रश्न
Name the phenomenon ?
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उत्तर
Phenomenon is called electromagnetic induction.
संबंधित प्रश्न
Explain why an induced current must flow in such a direction so as to oppose the change producing it.
The transformer is used in ______ current circuits.
The input and output voltage of a transformer are 220 V and 44 V respectively. Find: the turns ratio.
What is the ideal transformer?
A transformer lowers e.m.f. from 220 V to 15 V. If 400 W power is given in primary, calculate (i) the current in primary coil and (ii) the current in secondary coil.
Explain the working of the transformer.
A 200V/120V step-down transformer of 90% efficiency is connected to an induction stove of resistance 40 Ω. Find the current drawn by the primary of the transformer.
For an ideal step-down transformer, the quantity which is constant for both the coils is ______.
Mention two main sources of power loss in real transformers.
What is a transformer?
