IB Physics HL D.3.4 Magnetic force on charge Question Bank

Practise IB Physics SL/HL D.3.4 by applying magnetic force on charge concepts to exam-style physics questions.

Exam points

identify the relevant physical quantity, model or diagram
apply the correct equation and units to the evidence
justify the result using conservation laws, fields or energy relationships

[Maximum number: 1]

An electron moves in circular motion in a uniform magnetic field.

Figure for Question D.3.4—Magnetic force on charge question 1 — IB Physics HL

The velocity of the electron at point P is $6.8 \times 10^{5} \mathrm{~ms}^{-1}$ in the direction shown. The magnitude of the magnetic field is 8.5 T .

Calculate, in N , the magnitude of the magnetic force acting on the electron.

$1.60 \times 10^{-19} \times 6.8 \times 10^{5} \times 8.5=9.2 \times 10^{-13}$ « N »

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D.3.4—Magnetic force on charge question 1