Volt (V)

The video explains the concept of potential across a conductor with one ohm resistance when one ampere of current flows. It uses an analogy of water circulating in a system to describe electromotive force as the pressure difference that drives water around a circuit.

What is the potential across a conductor with a resistance of one ohm when one ampere of current flows?

• Four volts

• Three volts

• Two volts

• One volt

In the analogy used, what does electromotive force represent in a water system?

• The water temperature

• The water pressure difference

• The water volume

• The water speed

What drives the water around the circuit in the analogy?

• Water speed

• Water temperature

• Water pressure difference

• Water volume

How is electromotive force similar to water pressure in a circuit?

• It changes the color

• It reduces the volume

• It creates a flow

• It increases the temperature

What is the role of electromotive force in an electrical circuit?

• To stop current flow

• To decrease voltage

• To drive current flow

• To increase resistance