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Write symbol and state function of following component in an electric circuit :
voltmeter
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A cell of potential difference 12 V is connected to a bulb. The resistance of filament of bulb when it glows is 24Ω. Find the current drawn from the cell.
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Which sphere is at lower potential before electrical contact on the basis of convention?
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Draw a diagram showing two bulbs connected in series to a dry cell.
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