EE: Electric circuits assignment
Which circuit prevents the flow of current? - Answer open
Use the circuit diagram to decide if the lightbulb will light. Justify your answer. (1) - Answer
Sample Response: The lightbulb will light because this is a parallel circuit. Even though the
switch is open in one branch, the branch the lightbulb is in forms a closed circuit, allowing the
current to flow through the bulb.
Use the circuit diagram to decide if the lightbulb will light. Justify your answer. (2) - Answer
Sample Response: The lightbulb will not light because this is a short circuit. The branch without
the bulb has almost no resistance, so all the current will flow through that branch instead of
flowing through the bulb.
Which circuit has the higher equivalent resistance? - Answer series circuit
What is the equivalent resistance in this circuit? - Answer 1. 15 Ω
2. 3 A
Use the circuit diagram to determine the voltage drop across the 8 Ω resistor. - Answer 4V
If the current in this circuit is 3 A, what must be the value of R3? - Answer 5Ω
In a series circuit with three resistors connected to a power source, what would happen to the
equivalent resistance and current if you removed any one of the resistors? - Answer The
equivalent resistance would decrease and the current would increase.
What is the equivalent resistance in this parallel circuit? - Answer 1. 2.7 Ω
2. 120 V
3. 44 A
What is the current in each branch of the circuit? - Answer 1. 7.5 A
2. 6.0 A
3. 5.0 A
In a parallel circuit with three resistors connected to a power source, what would happen to the
equivalent resistance and current if you removed any one of the resistors? - Answer The
equivalent resistance would increase and the current would decrease.
Which circuit prevents the flow of current? - Answer open
Use the circuit diagram to decide if the lightbulb will light. Justify your answer. (1) - Answer
Sample Response: The lightbulb will light because this is a parallel circuit. Even though the
switch is open in one branch, the branch the lightbulb is in forms a closed circuit, allowing the
current to flow through the bulb.
Use the circuit diagram to decide if the lightbulb will light. Justify your answer. (2) - Answer
Sample Response: The lightbulb will not light because this is a short circuit. The branch without
the bulb has almost no resistance, so all the current will flow through that branch instead of
flowing through the bulb.
Which circuit has the higher equivalent resistance? - Answer series circuit
What is the equivalent resistance in this circuit? - Answer 1. 15 Ω
2. 3 A
Use the circuit diagram to determine the voltage drop across the 8 Ω resistor. - Answer 4V
If the current in this circuit is 3 A, what must be the value of R3? - Answer 5Ω
In a series circuit with three resistors connected to a power source, what would happen to the
equivalent resistance and current if you removed any one of the resistors? - Answer The
equivalent resistance would decrease and the current would increase.
What is the equivalent resistance in this parallel circuit? - Answer 1. 2.7 Ω
2. 120 V
3. 44 A
What is the current in each branch of the circuit? - Answer 1. 7.5 A
2. 6.0 A
3. 5.0 A
In a parallel circuit with three resistors connected to a power source, what would happen to the
equivalent resistance and current if you removed any one of the resistors? - Answer The
equivalent resistance would increase and the current would decrease.
