Practise

Question bank

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

TopicSkillDifficulty

2730 questions · page 21 of 137 · choose a topic above to narrow them down

SA-9702-KN2-0051 markL1 FoundationCalculatorAngled launch

A ball is kicked at

20

m s⁻¹ at

30^\circ

above the horizontal. Calculate the horizontal component of its initial velocity.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF1-0011 markL1 FoundationCalculatorF = BIL sin θ

0.050

m length of wire carries

3.0

A at right angles to a field of

0.20

T. Calculate the force on it.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF1-0041 markL1 FoundationCalculatorF = BIL sin θ

The force on a current-carrying wire in a magnetic field is zero when the wire is

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF1-0051 markL1 FoundationCalculatorThe tesla

Magnetic flux density is defined as

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF2-0011 markL1 FoundationCalculatorCharges in B fields

An electron moves at

3.0\times10^7

m s⁻¹ perpendicular to a

2.0

mT field. Calculate the force on it, in units of

10^{-15}

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF2-0031 markL1 FoundationCalculatorHall effect & selectors

Crossed fields of

E=6.0\times10^4

V m⁻¹ and

B=0.20

T form a velocity selector. Calculate the speed of particles that pass undeflected, in units of

10^5

m s⁻¹.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF2-0041 markL1 FoundationCalculatorCharges in B fields

A charged particle moves in a circle in a uniform magnetic field. The work done by the magnetic force on it is

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF3-0011 markL1 FoundationCalculatorForces between wires

Two long parallel wires carry currents in the same direction. The wires

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF3-0031 markL1 FoundationCalculatorField patterns

The magnetic field inside a long current-carrying solenoid is

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF3-0041 markL1 FoundationCalculatorField patterns

Placing a soft iron core inside a solenoid

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF3-0051 markL1 FoundationCalculatorField patterns

The rule used to find the direction of the magnetic field around a current-carrying wire is

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF4-0021 markL1 FoundationCalculatorFaraday and Lenz

A rod of length

0.30

m moves at

5.0

m s⁻¹ perpendicular to a

0.20

T field. Calculate the induced e.m.f.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF4-0031 markL1 FoundationCalculatorFlux and flux linkage

A field of

0.25

T passes perpendicularly through a loop of area

0.020

m². Calculate the flux, in mWb.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF4-0041 markL1 FoundationCalculatorFaraday and Lenz

Lenz's law states that the direction of an induced e.m.f. is such that it

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MF4-0051 markL1 FoundationCalculatorFaraday and Lenz

Lenz's law is a consequence of the conservation of

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MP1-0011 markL1 FoundationCalculatorAcoustic impedance

Muscle has density

1080

kg m⁻³ and speed of sound

1580

m s⁻¹. Calculate its acoustic impedance, in units of

10^6

kg m⁻² s⁻¹.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MP1-0031 markL1 FoundationCalculatorUltrasound imaging

An echo returns

65

μs after the pulse is sent. The speed of ultrasound in tissue is

1540

m s⁻¹. Calculate the depth of the boundary, in cm.

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MP1-0041 markL1 FoundationCalculatorUltrasound imaging

A coupling gel is used in ultrasound scanning because

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MP1-0051 markL1 FoundationCalculatorUltrasound imaging

A piezoelectric crystal

Salam Academy Original Practice · Proposed mark scheme

SA-9702-MP2-0031 markL1 FoundationCalculatorAttenuation and CT

Calculate the half-value thickness of a material with

\mu=50

m⁻¹, in cm.

Salam Academy Original Practice · Proposed mark scheme