In an electric circuit,a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing,then which tests will you perform in order to find out the reason for the bulb not glowing.
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The bulb will not glow. There is a potential difference between the open electrodes of the batteries but none at the terminals of the bulb. The "circuit" is not a circuit, it is open. Or you could consider it a circuit with an infinite resistance between the electrodes of the batteries. This also explains why there is no current in the circuit.
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