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Tungsten is used for the manufacture of the filament of an electric bulb, because –
Newton’s second law of motion primarily explains which of the following?
Which of the following materials behaves as a dielectric?
Which law states that the total current entering a junction is equal to the total current leaving the junction?
A circular coil of wire consisting of 120 turns, each of radius 12 cm carries a current of 0.30 A. What is the magnitude of the magnetic field B at the ...
Match the following machines with their working principles:
(i) Electric motor - (a) Heat energy into mechanical energy
(ii) Steam engin...
What is colour of light related to?
What is the work done by a centripetal force on an object moving in a circular path at constant speed?
The correct option, if speeds of gamma rays, X-rays and microwave are Vg, Vx an Vm respectively will be
For a cell terminal potential difference is 3.5 V when circuit is open and reduces to 2.5 V when cell is connected to a resistance of R = 10Ω then...
