Section 6:
Electricity
Circuit Diagrams
Current and Potential Differences
Current
o The rate of flow of charge. The charge, in a circuit, is carried by electrons through the
wires.
∆𝑄 (𝐶 ) = 𝐼 (𝐴) ∆𝑡(𝑠)
The Coulomb is the unit for charge; one coulomb is defined as the amount of charge that passes in 1
second when the current is 1 amperes.
Potential Difference
o Between two points, the work done in moving a charge between the points
𝑊 (𝐽)
𝑉 (𝑉) =
𝑄 (𝐶)
1 𝑉 = 1 𝐽𝐶 −1
Electricity
Circuit Diagrams
Current and Potential Differences
Current
o The rate of flow of charge. The charge, in a circuit, is carried by electrons through the
wires.
∆𝑄 (𝐶 ) = 𝐼 (𝐴) ∆𝑡(𝑠)
The Coulomb is the unit for charge; one coulomb is defined as the amount of charge that passes in 1
second when the current is 1 amperes.
Potential Difference
o Between two points, the work done in moving a charge between the points
𝑊 (𝐽)
𝑉 (𝑉) =
𝑄 (𝐶)
1 𝑉 = 1 𝐽𝐶 −1
