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The molecular theory of magnetism was given by Weber and modified later by Ewing. According to that theory -
Each molecule of a substance is a complete magnet in itself. Though, in a magnetized atom the molecular magnets are randomly oriented to give zero net magnetic moment. On magnetizing, the molecular magnets are realigned in a particular direction leading to a net magnetic moment.
Right-Hand Screw Rule In physics, the right-hand rule is a general mnemonic for understanding notation conventions for vectors in 3 dimensions. It was invented for use in elect
Can you explain Poynting theorem?
Explain 'drift velocity of free electrons'? Derive Ohm's law on the basis of the theory of electron drift.
Derive First law of thermodynamics When an amount of heat energy is supplied to the system, part of it enhances internal energy of the system and remaining is utilized by the s
Construction and working of Fabry perot interferometer
The magnetic vector potential in a specific region is a constant vector having magnitude 4πX10 5 units and points along the positive x-axis. What is the magnitude of the magnetic
the use and working principle of thermoelectric thermometer
Agriculture: 1. Radio isotopes are used to verify the optimum amount of fertilizer for the plants. 2. It is used to kill bacteria and conserved food stuff. 3. It is used
what is meant by body in physics
You have two pendulums and you release them at the same time. Pendulum A has mass 2 m attached to it and you release it from 5 . Pendulum B has mass 3 m attached to it and you rele
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