- APotential energy at that point.
- BElectric field at that point.
- CElectric potential at that point.
- DNone.
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Which of the following is not an application of eddy currents
|
(a) Induction furnace |
(b) Galvanometer damping |
|
(c) Speedometer of automobiles |
(d) X-ray crystallography |
A vertical wire carrying a current in the upward direction is placed in horizontal magnetic field directed towards north. The wire will experience a force directed towards
|
(a) North |
(b) South |
(c) East |
(d) West |
The core of a transformer is laminated to reduce energy losses due to
|
(a) Eddy currents |
(b) Hysteresis |
|
(c) Resistance in winding |
(d) None of these |
The pointer of a dead-beat galvanometer gives a steady deflection because
|
(a) Eddy currents are produced in the conducting frame over which the coil is wound |
|
(b) Its magnet is very strong |
|
(c) Its pointer is very light |
|
(d) Its frame is made of abonite |
Which of the following gives the value of magnetic field according to, Biot-Savart’s law’
|
(a) |
(b) |
(c) |
(d) |
The device that does not work on the principle of mutual induction is
|
(a) Induction coil |
(b) Motor |
(c) Tesla coil |
(d) Transformer |