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Define Electric Circuits So far we have only looked at electric charges sitting still and static discharges (like a shock or lightning). When we count on the charges moving thr
Disadvantages of D.C. Transmission of power 1. Electric power cannot be produced at high d.c. voltages because of commutation problem. 2. The d.c. voltage cannot be stepped
Neutron possesses: (1)Positive charge (2)Negative charge (3)No charge (4)All are correct Ans: (3)No charge
why we use he-ni laser light in michelson interferometer
A VDR is a special type of resistor that changes its resistance with rise in voltage. It has a very high resistance at low voltage (below the trigger voltage) and very low resista
Correction of short sightedness To remove this defect a convex lens is used in front of eye.
An electron and a proton are moving at the similar speed in circular paths in the similar uniform magnetic field. The radius of the path of the proton is one of the following.
Thomson experiment; Kelvin effect (Sir W. Thomson [later Lord Kelvin]): While an electric current pass through a conductor whose ends are maintained at distinct temperatures,
Harmful effects of Noise: 1. Noise causes nervous tension, aggression and commotion in normal human beings. 2. Continuous noise damage hearing power and complete deafness.
examples of like and unlike forces for class 9
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