1. draw current loops on the circuit. 2. use kirchhoff’s 2nd 3. use kirchhoff… · 2021. 2....
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Kirchhoff’s law worksheet
Route that will always work:
1. Draw current loops on the circuit.
2. Use Kirchhoff’s 2nd law to get an expression for each loop.
3. Use Kirchhoff’s 1st law to get an expression for the currents.
4. Solve simultaneously.
Bear in mind that their mind be an easier shortcut though, with practice we’ll get used to seeing these!
Basic: Series circuits only
Calculate the readings on each of the ammeters and voltmeters.
1 2 3
4 5
Medium: Parallel circuits.
Calculate the readings on each of the ammeters and voltmeters.
Hint: think carefully about what current loops you should draw. If there are two paths, one with resistance and one
with no resistance then all current will flow down the path with no resistance.
6 7 8
Hard:
Find the currents I 1, I2 and I3.
Hint: Draw the different loops of the circuit and write expression using V = IR in terms of I 1, I2 and I3. Then solve the
simultaneous equations.
I1
I3
I2
I1
I2
I3
9 10
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