Q5 of 18 Page 170

Name any two effects of electric current.

Electric current produces following two effects:


(i) Heating effect : When the energy from the source dissipates as heat.


(ii) Magnetic effect: When electric current flowing in the wire produces a magnetic field around it.


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3

Fig.14.22 shows four cells fixed on a board. Draw lines to indicate how you will connect their terminals with wires to make a battery of four

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The bulb in the circuit shown in Fig.14.23 does not glow. Can you

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When the current is switched on through a wire, a compass needle kept nearby gets deflected from its north-south position. Explain.

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Will the compass needle show deflection when the switch in the circuit shown in Fig. 14.69 is closed?