Advertisements
Advertisements
प्रश्न
State the use of the principle of electromagnetic induction.
उत्तर
It is used as a back-up for the lifts in tall buildings in case of electricity failure.
APPEARS IN
संबंधित प्रश्न
- Describe briefly one way producing an induced e.m.f?
- State one factor that determines the magnitude of induced e.m.f. in part (a) above.
- What factor determines the direction of induced e.m.f. in part (a) above?
In which of the following case does the electromagnetic induction occur?
Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased?
The direction of induced current is obtained by ______.
Faraday's law is the consequence of conservation of ______
The instantaneous magnetic flux in a circuit is `phi=4t^2-4t+1`. The total resistance of circuit is 15 Ω. At t = 2s, the induced current in circuit is ____________.
Fleming’s left hand and Right hand rules are used in ____________.
A D.C generator works on the principle of ____________.
Define the right-hand thumb rule.
Express Faraday-Lenz's law of electromagnetic induction in an equation form.
