31/07/2017
S30 Unit C: Physics - Circuit
Analysis
Name: ___________
Date: ___________
Review: The electron’s energy adventure through a circuit.
1. A Series Circuit
In a series circuit, current is the same everywhere and voltage changes.
a) Electrons come from the battery and pass through point 1.
 The voltage of the electrons here is __________ V.
 The current in the circuit here is __________ A.
b) Electrons pass through the resistor at point 2.
 The current in the circuit here is __________ A.
 How much voltage does the resistor take from the electrons?
(Hint: do a calculation.)
c) Electrons pass through point 3.
 The voltage of the electrons here is __________ V.
 The current in the circuit here is __________ A.
d) Electrons pass through the resistor at point 4.
 The current in the circuit here is __________ A.
 How much voltage does the resistor take from the electrons? (Hint: do a calculation.)
e) Electrons pass through point 5.
 The voltage of the electrons here is __________ V.
 The current in the circuit here is __________ A.
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31/07/2017
2. A Parallel Circuit
In a parallel circuit, voltage is the same everywhere and current changes.
a) Electrons come from the battery and pass through point 1.
 The voltage of the electrons here is __________ V.
 The current in the circuit here is __________ A.
b) Electrons pass through the resistor at point 2.
 The voltage of the electrons here is __________ V.
 The current in the circuit here is __________ A.
(Hint: do a calculation.)
c) Electrons pass through point 3.
 The voltage of the electrons here is __________ V.
 The current in the circuit here is __________ A.
d) Electrons pass through the resistor at point 4.
 The current in the circuit here is __________ A.
 How much voltage does the resistor take from the electrons? (Hint: do a calculation.)
Total Resistance
It is possible to find the total resistance of a circuit using the following two formulas:
For resistors in parallel:
For resistors in series:
Pro Tip: to add the reciprocal fractions from the last formula on your calculator, use the x-1 key.
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31/07/2017
ex) Determine the total resistance of the circuit below.
ex)
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