25. A dry cell's terminals are properly connected to a light bulb. Why does the bulb light up?
A The bulb is very luminous.
B. The circuit has a functional switch.
C. The electrons are negatively charged.
D. Electricity transfers from the dry cell to bulb.
A The bulb is very luminous.
B. The circuit has a functional switch.
C. The electrons are negatively charged.
D. Electricity transfers from the dry cell to bulb.
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Answer:
D
Explanation:
When a light bulb connects to an electrical power supply, an electrical current flows from one metal contact to the other. As the current travels through the wires and the filament, the filament heats up to the point where it begins to emit photons, which are small packets of visible light.
Answer:
D
Explanation:
im not sure if its correct hope it helps