Electromagnetic Field Theory A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur? At an angle of 45° to the axis of the magnetic field. At right angles to the axis of the magnetic field. Anywhere. Along the axis of the magnetic field. At an angle of 45° to the axis of the magnetic field. At right angles to the axis of the magnetic field. Anywhere. Along the axis of the magnetic field. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity less than that of disc and in the same direction. equal to that of disc and in the same direction. less than that of disc but in opposite direction. equal to that of disc and in the opposite direction. less than that of disc and in the same direction. equal to that of disc and in the same direction. less than that of disc but in opposite direction. equal to that of disc and in the opposite direction. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as self inductance. mutual inductance. series aiding inductance. capacitance. self inductance. mutual inductance. series aiding inductance. capacitance. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying 106 Amp. 106 volts. 106 Amp/sec. 106 volts/sec. 106 Amp. 106 volts. 106 Amp/sec. 106 volts/sec. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An electric dipole of moment P is placed in front of a ground sphere. The change induced on the surface of the sphere is (Assume radius of sphere = R and distance from dipole to centre of sphere = d) PR/d. Zero. PR/d2. PR 2/d3. PR/d. Zero. PR/d2. PR 2/d3. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Biot-Savarts law states the relation between magnetic intensity and filament current only. surface current only. volume current only. (A), (B), and (D) are all correct. filament current only. surface current only. volume current only. (A), (B), and (D) are all correct. ANSWER DOWNLOAD EXAMIANS APP
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