What is the function of a power source in a circuit? *
1 point
It provides a steady source of electricity
It provides a means through which the circuit can be broken
It opens and closes the circuit
It resist the flow of electrons
A battery is used to light two bulbs as shown. What happens to bulb B when bulb A is unscrewed from its socket? *
1 point
Captionless Image
Bulb B gets off
Bulb B gets busted
Bulb B’s gets lighted still
Impossible to determine
A battery is used to light a bulb as shown. A second bulb is connected by closing switch S. What happens to the bulbs? *
1 point
Captionless Image
The right bulb goes out; the left bulb lights up.
The right bulb gets dimmer; both bulbs have the same brightness.
The right bulb gets brighter; both bulbs have the same brightness.
The right bulb stays the same; the left bulb does not light.


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