The document discusses current and voltage in a series circuit. It states that in a series circuit, the current at any point is the same throughout the circuit. It also states that the total voltage in a series circuit is the sum of the individual voltages. Current is defined as the rate of flow of charge, measured in amps. Voltage is defined as the energy transferred per unit charge, measured in volts.
2. 12 December 2010
7.3 Voltage and Current
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3. The opposition to the flow of
current
The rate of flow of charge
How much energy each charge
carries
All components are in
a single branch
Components are in
multiple branches
4.
5.
6. Aims
• State the equations of current
and voltage in a series circuit
• Describe the changes in
current and voltage in a series
circuit
• Define current and voltage
7.
8.
9.
10. For a series circuit:
The current is the same
throughout the circuit
I I1 I 2 I 3
12. I’m counting
Current how many
coulombs of
☺ ☺ electrons go
past me every
☺ second
The number of
☺ Coulombs flowing ☺
past a point in the A
☺ circuit every second. ☺
I = Q/t
☺ ☺
☺ ☺
1 Amp = 1 coulomb per second
