A doorbell can be constructed by using a coil, a steel gong, and a hammer. When current is passed through the coil, the hammer strikes the gong because it becomes
Current flows through the above circuit when
When a current flows through a conductor its temperature
The current flowing through the coil of M.C.G.depends on
Write the following steps in sequential order to explain the working of an electric bell. (A) When current passes through the coil, it behaves like a magnet and attracts (pulls) the iron strip. (B) No more does not coild behave as an electromag-net and the attraction between the coil and the iron strip is lost. Because of this the iron strip gets back to its original position and touches the screw. (C ) The hammers connected to iron strip also moves and strikes the gong because of which, sound is produced. (D) When the iron strip is pulled towards the coil, it loses contact with the screw and the circuit becomes open circuit. (E). Once again the circuit is closed , and the above process is repeated.
When a circuit is switched on, current flows through the circuit with the speed of light because
In a tangent galvanometer a deflection of 30^(@) is obtained wth a certain current flowing through the coil. If the current is tripled, the deflection obtained will be
When current is allowed to flow through a coil of wire, the coil
BEIITIANS-ELECTRIC CURRENT AND ITS EFFECTS-IIT JEE WORKSHEET (V. Matrix Matching)
