To prevent electric shocks, the metallic electrical wires are covered with
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----------- is the positive terminal of an electric cell.
The tiny coiled metal wire present inside the bulb is called____________.
_______ is an electric device which easily closes or opens an electric circuit.
Electric energy is produced from the____________ within the cell.
The electric current in a closed circuit always flows from the ___________terminal of the electric cell to the ______terminal.
The central _____________of an electric cell is always positive.
49 videos|108 docs|107 tests
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49 videos|108 docs|107 tests
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