How many Kirchhoff's laws questions are there for 9702?

This page collects 7 recent Cambridge Physics (9702) past-paper questions tagged to Kirchhoff's laws. Each links straight to instant marking against the official 9702 scheme.

How are Kirchhoff's laws answers marked?

Type or photograph your working and MarkScheme scores it against the real 9702 mark scheme for this topic — method, accuracy and any band descriptors — so you see exactly where the marks are.

Where can I learn Kirchhoff's laws first?

Start with the free Physics lesson on Kirchhoff's laws, then come back and drill past-paper questions under timed conditions.

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9702 · topic questions

Kirchhoff's laws

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7 past-paper questions on Kirchhoff's laws

9702/41 · May/June 20243 marks
the time constant τ of the circuit in Fig. 6.1.
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9702/22 · May/June 20243 marks
The resistance of X is increased. The temperature of Y remains at 190°C. By reference to the current in the circuit, state and…
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9702/23 · May/June 20242 marks
Use Kirchhoff's laws to show that the total resistance R_T of the external circuit is given by 1/R_T = 1/R₁ + 1/R₂.
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9702/22 · May/June 20252 marks
Calculate I₁.
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9702/22 · October/November 20242 marks
Determine the current I₁.
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9702/22 · October/November 20242 marks
Calculate the p.d. across component X.
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9702/23 · May/June 20242 marks
the p.d. measured by the voltmeter.
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Question stems are shortened previews. Open a question to attempt the full version and have it marked.

Worked example

What a lost mark actually looks like

This answer reaches the right coordinates and still drops a mark — the conclusion is stated, but never justified. Examiners pay for the reasoning, not the answer.

MARKED

80%

Strong

M1dy/dx = 3x^2 - 12x + 9M1 earned
M1(x - 1) $(x - 3) = 0$ M1 earned
A1 $x = 1$ or $x = 3$ A1 earned
B1(1, 5) is a maximum and (3, 1) is a minimumB1 not earned

B1 — withheld
You stated the nature of each point correctly, but stated it without justification. This mark needs the reasoning shown — either evaluate the second derivative (d²y/dx² = 6x − 12, giving −6 at $x = 1$ and +6 at $x = 3$ ) or show a sign change of dy/dx either side of each point. An unsupported assertion earns nothing here even when the conclusion is right.

Kirchhoff's laws (9702) past-paper questions — marked instantly

These are real Cambridge Physics past-paper questions on Kirchhoff's laws. Open one, attempt it, then upload your working — MarkScheme grades it against the official 9702 mark scheme so you see exactly where the marks are won and lost on this topic.

Mark your answer →Learn Kirchhoff's laws 9702 grade boundaries

Frequently asked questions

How many Kirchhoff's laws questions are there for 9702?: This page collects 7 recent Cambridge Physics (9702) past-paper questions tagged to Kirchhoff's laws. Each links straight to instant marking against the official 9702 scheme.
How are Kirchhoff's laws answers marked?: Type or photograph your working and MarkScheme scores it against the real 9702 mark scheme for this topic — method, accuracy and any band descriptors — so you see exactly where the marks are.
Where can I learn Kirchhoff's laws first?: Start with the free Physics lesson on Kirchhoff's laws, then come back and drill past-paper questions under timed conditions.