Chapter 9.2 Potential Deference & Electromotive Force

Question 1

Potential difference definition

Answer 1

• Measure of energy transfer by charge carriers

* When electrical energy is transferred to other forms through circuit components when charge carriers pass through them

Question 2

Volt definition + equation

Answer 2

• V = JC^-1 = volt (pd) = joule (energy) per coulomb (charge)

• V = W/Q
-volt = energy transferred/charge

Question 3

What’s a voltmeter

Answer 3

• Measures pd
• Placed in parallel

• [Ideally] Infinite resistance
-because no current

Question 4

Electromotive force definition

Answer 4

• Measure of energy transfer by charge carriers

* When energy is transferred from chemical energy in a cell/battery to electrical energy in a circuit (per unit charge)