Kirchhoff's Laws
Question 1
Which circuit has the highest total resistance (= equivalence resistance). All of the resistors and batteries are identical in the circuits shown.
Circuit A
Circuit B
Circuit C
Circuit D
Circuit E
Circuit F
Question 2
Which of the following concepts explains why the current that flows through resistors that are connected in parallel is different for each resistor?
Conservation of energy
Conservation of charge
Ohm’s law
Electric Field strength
Question 3
Which two circuits below have the same total resistance (= equivalence resistance)? All of the resistors and batteries are identical in the circuits shown.
Circuit A
Circuit B
Circuit C
Circuit D
Circuit E
Circuit F
Question 4
All of the bulbs in the circuits below are identical, as are all of the batteries. In which of the circuits is the brightness of light bulb X the highest?
Circuit A
Circuit B
Circuit C
All the same
All 0
Question 5
Three resistors of 4 Ω are connected in series. What is the total resistance in the circuit?
Question 6
Kirchhoff's first law is referred to as the "junction law" which of the following (possibly multiple) expressions below describe this law?
The sum of all variations of potential in a closed loop equals zero
The sum of the currents into a junction equals the sum of the currents away from a junction
Conservation of charge
Total charge flowing into a junction equals the total charge flowing away from the junction.
Question 7
Three resistors of 4 Ω are connected in parallel. What is the total resistance in the circuit?
Question 8
All of the bulbs in the circuits below are identical, as are all of the batteries. In which of the circuits is the brightness of light bulb X the highest?
Circuit A
Circuit B
Circuit C
All the same
All 0
Question 9
Which two circuits below have the same total resistance (= equivalence resistance)? All of the resistors and batteries are identical in the circuits shown.
Circuit A
Circuit C
Circuit D
Circuit E
Question 10
All of the bulbs in the circuits below are identical, as are all of the batteries. In which of the circuits is the brightness of light bulb X the highest?
Circuit A
Circuit B
Circuit C
All the same
All 0
Question 11
In which circuit is the magnitude of the potential difference between points M and N the lowest?
Circuit A
Circuit B
Circuit C
Circuit D
All the same
All 0
Question 12
Five identical resistors and a switch are connected to a battery as shown. When the switch closes, what will happen to the current in resistor A?
Increase
Decrease
Remain the same
Question 13
With the information given about the circuit, find the potential difference in volts V of R2.
Question 14
All of the resistors in the circuits below are identical. The switch in each case is open. In which circuit will the reading of the voltmeter be the highest?
Circuit A
Circuit B
Circuit C
Circuit D
All the same
All 0
Question 15
For these two circuits, consider the current in the resistor R1 closest to the battery. What is true for the current in R1 in the circuit on the left?
the current will be larger
the current will be smaller
both currents are the same in R1