Kirchhoff's rules for circuits
Grade 11 Science Worksheet - Building Confidence
Circle the best answer, or write your answer on the line.
1.2 A flows into a junction. One wire carries 0.5 A out. How much current does the only other wire carry out, to 0.01 A, Bo?
At junction P in the schematic, how much current leaves on wire 3, Jun?
- 2.5 A
- 1.5 A
- 5.5 A
What does Kirchhoff's junction rule say, by Luz's reading (OpenStax)?
- Current into a junction equals current out
- Current out of a junction is double the current in
- Current into a junction is lost as heat
At junction Q in the schematic, how much current leaves on wire 3, Milo?
- 6 A
- 1 A
- 5 A
What does Kirchhoff's loop rule say, by Noah's reading (OpenStax)?
- Each resistor in the loop drops the full battery voltage
- The voltage changes around a closed loop add to zero
- The current changes around a loop add to zero
A 9 V battery drives one loop with two resistors. One drops 5 V. What does the other drop, Pia?
- 9 V
- 4 V
- 14 V
Going around a loop in the current's direction, what is the voltage change across a resistor, Ren?
- A rise of IR
- No change, since current flows through it
- A drop of IR
Read this first
Use this
Circuit schematic (example data):
In the schematic, which point is a junction, Tala?
- The middle of the 3 Ω resistor
- Point A, where the current splits
- The battery's + end, where current starts
In the schematic, why does ammeter A0 read 3 A, Zee?
Use the picture in question 8.
- The battery makes 3 A no matter what is connected
- It carries both branch currents: 2 A + 1 A
- It carries the average of the branches
In the schematic, what is the voltage across the 6 Ω branch, Esme?
Use the picture in question 8.
- 12 V, twice the battery voltage
- 3 V, half of the battery voltage
- 6 V, the same as the 3 Ω branch