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There is a concept that one must understand when working with electricity; "electrical current will always take the path of least resistance."
Many people don't understand the difference between a "short" circuit and an "open" circuit.
An open circuit is when there is effectively no return path from the electrical source back. It's like when a light switch is turned off and the light isn't on.
A SHORT circuit would be when the light switch is turned on but another wire is across the same wire pair, resulting in an effectively shorter path between the conductors of the power source. The electrical current then takes the path of least resistance, leaving no electrical current for the bulb.
Naturally, there is that gray area between a short circuit and an open circuit, that's where things run properly... in general.
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What could you add to the circuit to control the bulb?
Switch
What is the definition of electric bulb?
A glass sphere containing a metal element that glows when electricity is applied.
What job does a bulb do in a circuit?
The bulb converts energy from the power source into light and heat. It is the load in the circuit.
What is a circuit that lights up even if one bulb is out?
A parallel circuit lights up even when one bulb is out.
What would happen if you didn't have a light bulb for a circuit?
it would be ok in a circuit which didn't need a light bulb.
