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प्रश्न
State two ways through which the strength of an electromagnet can be increased.
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उत्तर
the strength of an electromagnet can be increased by following ways:
(i) By increasing the number of turns of winding in the solenoid.
(ii) By increasing the current through the solenoid.
संबंधित प्रश्न
State the principle of the step-down transformer and its working.
Mention various energy losses in transformer device
What type of current is transmitted from the power station?
The secondary windings of a transformer in which the voltage is stepped down are usually made of thicker wire than the primary. Explain why.
Find out the phase relationship between voltage and current in a pure inductive circuit.
For an ideal step-down transformer, the quantity which is constant for both the coils is ______.
Which among the following, is not a cause for power loss in a transformer?
Draw the effective equivalent circuit of the circuit shown in figure, at very high frequencies and find the effective impedance.
In an ideal transformer, the turns ratio is `N_p/N_s = 1/2`. The ratio Vs : Vp is equal to (the symbols carry their usual meaning):
