Why does moving part of a moving coil galvanometer comes to rest almost instantaneously ?

♦ Scientific Reasoning : Why does moving part of a moving coil galvanometer comes to rest almost instantaneously ? ♦

Ans: Moving part of a moving coil galvanometer comes to rest almost instantaneously Due to electromagnetic damping , that is production of induced current in the frame and the coil which strongly opposes motion according to Lenz’s Law .

What happens when an electric dipole is placed in a non uniform electric field ?

♦ Scientific Reasoning : What happens when an electric dipole is placed in a non uniform electric field ? ♦

Ans : when an electric dipole is placed in a non uniform electric field ,it experiences some net force and some net torque .

Why does Microwave oven heats up the food items containing water molecules most efficiently ?

♦ Scientific Reasoning : Why does Microwave oven heats up the food items containing water molecules most efficiently ? ♦

Ans. Microwave oven heats up the food items containing water molecules most efficiently because the frequency of microwaves matches the resonant frequency of water molecules .