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The switch in the circuit shown in Figure is diser
and the hight bulb glows steadily. The munisa
simple air-core solenoid. As a on mi is teme
insented into the interior of the solenni. the
brightness of the light bulb ) masses.
decreases.or(c) remains the same
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If a bulb is connected to a battery, then in the bulb the direction of current is such that it flows from negative terminal of battery to its positive terminal. Whereas inside a battery electrons flows from positive terminal to negative terminal. Also, the current will flow only in a closed loop.
It is given that bulbs A and B glow with equal brightness, when the voltage is supplied with both the batteries E1 and E2.
As the 3 bulbs are identical, the bulb connected to the switch also requires the same voltage for it to glow. But here, when the switch is closed, it forms a closed loop only with one battery. Therefore, it does not glow as the voltage is not sufficient.
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