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Give an activity to examine the behaviour of the following solid materials towards electricity: plastic, copper, rubber, wood, graphite.

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  • Take a torch bulb and connect its positive terminal to the positive terminal of the battery and negative terminal to the object to be tested.
  • Connect the negative terminal of the battery to the object with a wire.
  • Do not touch the object when the current is passing through it.
  • If the bulb glows, then the material is conducting else not.

We see that graphite and copper conduct electricity whereas rubber, plastic and wood do not.

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