Voltage Explained

To generate heat within the circuit

To push free electrons around a circuit

To store electrical energy

To resist the flow of electrons

The amount of current flowing

The resistance of the pipe

The voltage

The size of the water tank

The actual amount of work being performed by the circuit

The difference in current between two points

The amount of energy stored in the circuit

How much work can potentially be done by a circuit

Amperes (A)

Ohms (Ω)

Volts (V)

Watts (W)

Yes

No

1.5 V

3.0 V

0.75 V

0.375 V

The amount of current flowing through a circuit.

The resistance offered by a material to electron flow.

The force required to drive one Coulomb through a resistor of one ohm in one second.

The rate at which electrical energy is consumed.

DC voltage causes electrons to flow in one constant direction, while AC voltage causes electrons to alternate flowing forwards and backwards.

DC voltage causes electrons to alternate flowing forwards and backwards, while AC voltage causes electrons to flow in one constant direction.

Both DC and AC voltages cause electrons to flow in one constant direction, but at different speeds.

Both DC and AC voltages cause electrons to alternate flowing forwards and backwards, but with different frequencies.

The hair dryer will operate normally, but at half its usual power.

The hair dryer will not turn on at all.

The hair dryer will burn out due to excessive voltage.

The hair dryer will operate at a higher speed and produce more heat.