In Fig. 3.20 in which case(s) the lamp will not glow when the switch is closed? Class 7
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Expert Answer
In Fig. 3.20 in which case(s) the lamp will not glow when the switch is closed? Class 7
In Fig. 3.20 in which case(s) the lamp will not glow when the switch is closed? Class 7
Answer:
- If the switch is closed, the current will flow through the circuit and the lamp will glow.
- If the switch is closed, but the polarity (positive (+) or negative (-) charge of the terminals) of the cell is reversed, then the lamp will glow because the bulbs are not forward polarity biased.
- Since the LEDs are forward polarity biased and if the switch is closed, it will allow the current to pass, so the lamp will glow.
- If the switch is closed, it will allow the current to pass, and the lamp will glow.