With diagram explain the principle how torch works
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A torch is a portable electric lamp which uses two or more cells to light a small bulb. A torch is used to provide light in the dark when it is switched on. ... When the torch is needed to provide light, the sliding switch is closed by pushing it forward so that the circuit is completed and the bulb of the torch lights up
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A torch is a portable electric lamp which uses two or more cells to light a small bulb. A torch is used to provide light in the dark when it is switched on. ... When the torch is needed to provide light, the sliding switch is closed by pushing it forward so that the circuit is completed and the bulb of the torch lights up
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