Practise

Question bank

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

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2730 questions · page 18 of 137 · choose a topic above to narrow them down

SA-9702-DC2-0041 markL1 FoundationCalculatorKirchhoff's laws

Kirchhoff's first law is a consequence of the conservation of

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SA-9702-DC2-0051 markL1 FoundationCalculatorKirchhoff's laws

Kirchhoff's second law is a consequence of the conservation of

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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-DS1-0011 markL1 FoundationCalculatorStress & strain

A force of

200

N acts on a wire of cross-sectional area

2.5\times10^{-6}

m². Calculate the stress, in MPa.

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SA-9702-DS1-0021 markL1 FoundationCalculatorStress & strain

A wire of original length

1.5

m extends by

0.60

mm. Calculate the strain, in units of

10^{-4}

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SA-9702-DS1-0051 markL1 FoundationCalculatorYoung modulus

The Young modulus of a material is equal to

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SA-9702-DS2-0011 markL1 FoundationCalculatorStrain energy

A force of

40

N stretches a wire by

0.050

m, within its limit of proportionality. Calculate the elastic potential energy stored.

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SA-9702-DS2-0021 markL1 FoundationCalculatorStrain energy

A spring with

k=200

N m⁻¹ is stretched by

0.10

m. Calculate the energy stored.

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SA-9702-DS2-0031 markL1 FoundationCalculatorStrain energy

The work done in stretching a wire is represented by

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SA-9702-DS2-0041 markL1 FoundationCalculatorMaterial behaviour

The elastic limit is the point beyond which

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SA-9702-DS2-0051 markL1 FoundationCalculatorMaterial behaviour

Plastic deformation is

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SA-9702-DY1-0011 markL1 FoundationCalculatorNewton's laws

A resultant force of

2.4

N acts on a

0.80

kg trolley. Calculate its acceleration.

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SA-9702-DY1-0022 marksL1 FoundationCalculatorNewton's laws

1200

kg car has a driving force of

3000

N and total resistive forces of

600

N. Calculate its acceleration.

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SA-9702-DY1-0031 markL1 FoundationCalculatorDrag & terminal velocity

Calculate the weight of a

65

kg person on Earth. (

g=9.81

m s⁻²)

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SA-9702-DY2-0012 marksL1 FoundationCalculatorConservation

3.0

kg trolley moving at

4.0

m s⁻¹ collides with a stationary

1.0

kg trolley. They stick together. Calculate their common velocity.

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SA-9702-DY2-0031 markL1 FoundationCalculatorElastic collisions

In a perfectly elastic collision,

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SA-9702-EC1-0011 markL1 FoundationCalculatorCharge & current

A current of

0.40

A flows for

2.0

minutes. Calculate the charge that flows.

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SA-9702-EC1-0021 markL1 FoundationCalculatorCharge & current

Calculate the number of electrons that make up a charge of

48

C, in units of

10^{20}

. (

e=1.60\times10^{-19}

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SA-9702-EC1-0041 markL1 FoundationCalculatorCharge & current

The charge on any object is always

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SA-9702-EC2-0011 markL1 FoundationCalculatorPotential difference

30

J of energy is transferred when

2.5

C of charge passes through a resistor. Calculate the p.d. across it.

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