Question

ELECTRIC CURRENT AND ITS EFFECTS

Answer 1

The three effects of the electric current are the heating effect, magnetic effect and the electric effect.

Answer 2

Materials which allow electricity to pass through them with easily are known as conductors of electricity. Most of the metals are good conductors of electricity. Materials which do not allow electricity to pass through them easily are called poor conductor of electricity or insulators. Plastic,wood,bakellite are some of the well-known poor conductors of electricity. Some liquids do conduct electricity. The water that we get from sources,such as taps,hand pumps,wells and ponds,generally contains several salts dissolved in it. This water is , thus, a reasonably good standing on wet floor. Air is a poor conductor of electricity. But during lightning , an electric current passes through air. It is, therefore,preferable to classify materials as good conductors or poor conductors instead of classifying them as conductors and insulators. When an electric current passes through a pure metallic conductor,whether solid or liquid (e.g. mercury), there is no chemical effect , i.e. there is no change in the chemical position of the conductor. There is only change in the heating effect of current. When an electric current passes through a wire , then it's get heated up this is known as heating effect of electric current. When an electric current passes through an ionic solution. The resulting effect are known as chemical effects of electric current.


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