Advertisements
Advertisements
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?
Advertisements
उत्तर
- A DYNAMO, which is a coil that moves constantly in a magnetic field, can generate an induced current.
- Magnitude of induced e.m.f depend upon:
- The change in the magnetic flux.
- The time in which the magnetic flux changes.
- The direction of induced e.m.f depends on Fleming's right hand rule and Lenz's law.
APPEARS IN
संबंधित प्रश्न
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 ______.
An electron moves on a straight line path XY as shown. The abed is a coil adjacent to the path of electron. What will be the direction of current, if any, induced in the coil?
A coil of 25 turns is pulled in 0.05 s between the poles of a magnet, where its area includes `21 xx106-6 "Wb" "to" 1 xx 10^-6 "Wb"`. The average e.m.f. is ______.
For which angle between two equal vectors `vec"A"` and `vec"B"` will the magnitude of the sum of two vectors be equal to the magnitude of each vector?
A conductor in the form of a circular arc of the radius of curvature R subtends an angle Ø at its centre of curvature. If the current in the conduct is I, the magnetic induction at the centre of curvature is ______.
Name the principle of AC generator.
State the use of the principle of electromagnetic induction.
State two factors on which the magnitude of induced e.m.f. in a coil depend.
An infinitely long cylinder is kept parallel to an uniform magnetic field B directed along positive z axis. The direction of induced current as seen from the z axis will be ______.
