1.3 Voltage

What is the energy required to move a unit charge through an element?

• Current

• Power

• Voltage

• Resistance

How is voltage mathematically defined?

• V = w/q

• V = w - q

• V = q/w

• V = w + q

What is the interpretation of Vab in an electric circuit?

• Point a is at the potential of Vab volts not related to point b

• Point a is at the potential of Vab volts lower than point b

• Point a is at the potential of Vab volts higher than point b

• Point a is at the potential of Vab volts equal to point b

What do the + and - signs represent in voltage?

• Reference direction or voltage polarity

• Energy and power

• Positive and negative charges

• Resistance and current

What is the unit of voltage?

• Newton-meter

• Joules

• Coulombs

• Volts