Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

TopicSkillDifficulty

12 questions

SA-9702-DC3-0012 marksL1 FoundationCalculatorPotential dividers

9.0

V supply is connected across a

2.0

kΩ resistor and a

1.0

kΩ resistor in series. Calculate the p.d. across the

1.0

kΩ resistor.

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SA-9702-DC3-0061 markL1 FoundationCalculatorPotentiometers

At the balance point of a potentiometer, the galvanometer reading is

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SA-9702-DC3-0091 markL1 FoundationCalculatorPotential dividers

Two resistors of

3.0

kΩ and

6.0

kΩ are in series across a supply. The p.d. across the

3.0

kΩ resistor is

2.0

V. Calculate the p.d. across the

6.0

kΩ resistor.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-DC3-0121 markL1 FoundationCalculatorPotential dividers

In a potential divider of two resistors in series, the p.d. across each resistor is

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SA-9702-DC3-0022 marksL2 StandardCalculatorPotential dividers

A potential divider has

R_1=4.7

kΩ and a

12

V supply. Calculate the value of

R_2

that gives an output of

4.0

V across

R_2

, in kΩ.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-DC3-0031 markL2 StandardCalculatorPotential dividers

A potential divider consists of a fixed resistor and an NTC thermistor. As the temperature rises, the p.d. across the fixed resistor

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SA-9702-DC3-0041 markL2 StandardCalculatorPotential dividers

An LDR and a fixed resistor form a potential divider. To get an output that rises as it gets darker, the output should be taken across

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SA-9702-DC3-0052 marksL2 StandardCalculatorPotentiometers

A cell of e.m.f.

1.02

V balances at

51.0

cm on a potentiometer wire. Another cell balances at

75.0

cm. Calculate the e.m.f. of the second cell.

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SA-9702-DC3-0071 markL2 StandardCalculatorPotentiometers

A potentiometer measures the e.m.f. of a cell more accurately than an ordinary voltmeter because at balance

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SA-9702-DC3-0082 marksL2 StandardCalculatorPotentiometers

A potentiometer wire

1.00

m long has a p.d. of

2.0

V across it. Calculate the balance length for a cell of e.m.f.

1.5

V, in cm.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-DC3-0101 markL2 StandardCalculatorPotential dividers

A voltmeter of resistance comparable to

R_2

is connected across

R_2

in a potential divider. Its reading is

Salam Academy Original Practice · Proposed mark scheme

SA-9702-DC3-0113 marksL3 ExamCalculatorPotential dividers

6.0

V supply is across a

2.0

kΩ fixed resistor in series with a thermistor. At

20

°C the thermistor's resistance is

4.0

kΩ; at

60

°C it is

1.0

kΩ. Calculate the increase in the p.d. across the fixed resistor when the temperature rises from

20

°C to

60

°C.

Salam Academy Original Practice · Proposed mark scheme