Potential Difference

Question 1

What is potential difference?

Answer 1

The potential difference between 2 points in an electric circuit (voltage) is the work done per coulomb of charge that passes between the points
Easy answer - the work done between 2 points in an electric circuit

Question 2

What is the equation for potential difference?

Answer 2

Potential difference = work done/charge

V=W/Q

Question 3

What are the units for potential difference?

Answer 3

Potential difference = volts (v)
Work done = joules (J)
Charge = coulombs (C)

Question 4

What does a voltmeter measure?

Answer 4

Voltage

The voltage across a component

Question 5

What is resistance?

Answer 5

The resistance of a component can be found by measuring the current through and potential difference across the component

Question 6

What is the equation and unit for resistance?

Answer 6

Resistance (♎️)= voltage (V)/current (A)
R=V/I
Resistance is measured in ohms (♎️)