Question

5. The bulb light up when __________.
Option s
(A) the cell, the bulb and the wires make a closed circuit
(b) there is a gap in the electrical path
(c) the path starts and ends at the same terminal of the cell
(d) the cell, the bulb and the wires make an open circuit

Answer 1

Answer:

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.