Question

4.1.2 quiz: electricity
question 10 of 10
a circuit consists of a wire, a lightbulb, a switch, and a battery. what would happen if the battery were replaced with a section of wire?
a. the circuit would have more voltage and more current.
b. the circuit would have no voltage and no current.
c. the circuit would have more current and no resistance.
d. the circuit would have no current and more resistance.

Explanation:

A battery is a source of electrical energy that provides voltage to drive the current in a circuit. Voltage (\(V\)) is necessary for current (\(I\)) to flow (according to Ohm's law \(I=\frac{V}{R}\), where \(R\) is resistance). If the battery is replaced with a wire, there is no source of voltage. Without voltage (\(V = 0\)), using Ohm's law \(I=\frac{V}{R}\), if \(V = 0\) and \(R\) (resistance of the light - bulb) is non - zero, then \(I = 0\).

Answer:

B. The circuit would have no voltage and no current.