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ICE 4M – Basic Electronics
Voltage, Current, and Resistance Calculations using Ohm's and Kirchoff's Laws
Name:
There are 10 questions to complete in this assignment. The assignment will be
marked out of 86 and is worth 15% of your total mark.
Please treat these problems as formal word problems. Declare all of your known
variables. Solve the problem line by line and include the formulas, calculations, and
all units of measure (kilo, micro etc.) with the correct electronic symbol or term
(ohms or  etc.).
Question 1: A circuit has a current of 1340 mA and a voltage of 11 V. What is the
power of the circuit? What is the resistance of the circuit? (6 marks)
Question 2: A circuit has a power of 400 W and a resistance of 100 Ω. What is the
current of the circuit? (3 marks)
Question 3: A circuit has a current of 2 A and a resistance of 8 Ω. What is the power
of the circuit? (3 marks)
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Question 4:
A circuit has the following resistances Ω. What is the total resistance in the circuit?
(6 marks)
Select any true statements about this circuit by applying a yellow highlight on
the statement or letter and a red highlight on an incorrect statement.
a. This is a series circuit in which there is only one path for current to flow.
b. The current flowing through R1 is higher then the current through R2 and R3.
c. When resistances are connected in series, the total resistance in the circuit is
equal to the sum of the resistances of all the parts of the circuit.
d. The current (I) is the same in all parts of the circuit.
RT =
Question 5:
A circuit has the following resistances Ω. What is the total resistance in the circuit?
(6 marks)
Select any true statements about this circuit by applying a yellow highlight on
the statement or letter and a red highlight on an incorrect statement.
a. This is a parallel circuit in which there is only one path for current to flow.
b. The overall resistance of the circuit decreases as the number of parallel paths
increases.
c. The total resistance of equal resistors in parallel is equal to the resistance of
one resistor divided by the number of resistors.
d. The current (I) is the same in all parts of the circuit.
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RT =
Question 6:
A circuit has the following resistances Ω. What is the total resistance in the circuit?
(6 marks)
Select any true statements about this circuit by applying a yellow highlight on
the statement or letter and a red highlight on an incorrect statement.
a. This is a series/parallel circuit in which there is more than one path for
current to flow.
b. If two resistors with the same resistance are connected in parallel, the
equivalent resistance is half of that value.
c. RT=R1+R2+R3.
d. When any two unequal resistors are in parallel, it is often easier to calculate
the total resistance by multiplying the two resistances and then dividing the
product by the sum of the resistances.
RT =
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Question 7:
A circuit has the following resistances Ω and voltage V. Find the total resistance RT,
total current IT, current (I) through each resistor (R1, R2 & R3) and the voltage (V)
through each resistor. (24 marks)
Remember to solve the problem line by line and include the formulas,
calculations, and all units of measure (kilo, micro etc.) with the correct electronic
symbol or term (ohms or  etc.). You will be attributed 3 marks for the correct
answer with -1 for incorrect unit of measure (for example mA vs A), and -1 mark
for the incorrect unit symbol (for example K vs Kv).
Question 8:
Using Kirchoff’s voltage law, prove the total voltage in question 7 from your
calculated answers. (4 marks)
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Question 9:
A circuit has the following resistances Ω and voltage V. Find the total resistance RT,
total current IT, current (I) through each resistor (R1, R2 & R3) and the voltage (V)
through each resistor. (24 marks)
Remember to solve the problem line by line and include the formulas,
calculations, and all units of measure (kilo, micro etc.) with the correct electronic
symbol or term (ohms or  etc). You will be attributed 3 marks for the correct
answer with -1 for incorrect unit of measure (for example mA vs A), and -1 mark
for the incorrect unit symbol (for example K vs Kv).
Question 10: (4 marks)
Using Kirchoff’s current law, prove the total current you found in question 9 from
your calculated answers.
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Total score out of
/86
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