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Physics Electricity And Magnetism Difficulty: Medium

Among various electrical safety devices, one based on the heating effect of electric current is called a

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Pieces of camphor placed on water move about rapidly. This is because of Which of the following is proportional to the potential difference? Work done will be maximum if the angle between the force F and displacement d is______________________? In spherical polar coordinates (l, q, a), q denotes the polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by Four wires of same material and dimensions as mentioned below are stretched by a load of same magnitude separately. Which one of them will be elongated maximum?