Set up the circuit shown in Fig. 14.17 again. Move the key to ‘ON’ position and watch carefully in which direction the compass needle gets deflected. Switch ‘OFF’ the current. Now keeping rest of the circuit intact, reverse the connections at the terminal of the cell. Again switch ‘on’ the current. Note the direction in which the needle gets deflected. Think of an explanation.
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explanation: this is a set of circuit shown in figure 14.7 the switch on on position watch carefully the direction of the compass needle gets in another direction which means switch off current if it keeps continue the compass does not gets current supplied and does not get move does not most if the switch is on off position because if it does not gets current it will not be able to move
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