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There is a pencil in middle of circuit as wood is a material which doesn't allow electricity pass through it bulb doesn't light up
If the batteries in a torch are arranged correctly and it's bulb doesn't light it can be two reasons1)may be switch is not working 2)may be bulb of torch is not working
If the batteries in a torch are arranged correctly and it's bulb doesn't light it can be two reasons1)may be switch is not working 2)may be bulb of torch is not working
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