PH-19
Circuit components
Physics · Secondary 3 · Medium · Circuit components
A diode is placed in series with a lamp to protect it from reverse connection of the battery. The diode symbol has a triangle pointing towards a vertical line. The battery is connected so that the positive terminal is on the triangle side and the negative terminal is on the line side. What happens when the switch is closed?
- The lamp lights normally.
- The lamp does not light because the diode blocks current in both directions.
- The lamp flickers on and off.
- The lamp only lights if the battery is reversed.
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