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-EF1-0011 markL1 FoundationCalculatorUniform fields

Two parallel plates

2.0

cm apart have a p.d. of

500

V. Calculate the field strength between them, in units of

10^4

V m⁻¹.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0021 markL1 FoundationCalculatorElectric field strength

Calculate the force on an electron in a field of

2.5\times10^4

V m⁻¹, in units of

10^{-15}

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0041 markL1 FoundationCalculatorElectric field strength

Electric field strength at a point is defined as

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SA-9702-EF1-0051 markL1 FoundationCalculatorElectric field strength

The unit V m⁻¹ is equivalent to

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0081 markL1 FoundationCalculatorElectric field strength

Electric field lines

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0091 markL1 FoundationCalculatorUniform fields

The separation of two parallel plates is halved at constant p.d. State the factor by which the field strength changes.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0121 markL1 FoundationCalculatorElectric field strength

The field between two oppositely charged parallel plates (away from the edges) is

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SA-9702-EF1-0032 marksL2 StandardCalculatorUniform fields

Calculate the acceleration of an electron in a field of

2.5\times10^4

V m⁻¹, in units of

10^{15}

m s⁻². (

m_e=9.11\times10^{-31}

kg)

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0061 markL2 StandardCalculatorUniform fields

An electron enters the uniform field between parallel plates at right angles to the field. Its path between the plates is

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0071 markL2 StandardCalculatorUniform fields

An oil drop of weight

4.8\times10^{-14}

N is held stationary between plates

1.0

cm apart with a p.d. of

1500

V. Calculate the charge on the drop, in units of

10^{-19}

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0102 marksL2 StandardCalculatorUniform fields

A proton is accelerated from rest through a p.d. of

1000

V. Calculate its final speed, in units of

10^5

m s⁻¹. (

m_p=1.67\times10^{-27}

kg)

Salam Academy Original Practice · Proposed mark scheme

SA-9702-EF1-0113 marksL3 ExamCalculatorUniform fields

An electron with acceleration

4.4\times10^{15}

m s⁻² towards one plate enters the field at

2.0\times10^7

m s⁻¹ perpendicular to it and travels

5.0

cm parallel to the plates. Calculate its deflection, in cm.

Salam Academy Original Practice · Proposed mark scheme