IB Physics HL D.3.5 Force on current conductor Question Bank

Practise IB Physics SL/HL D.3.5 by applying force on current conductor 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: 3]

A rod, R , lies perpendicular to a uniform magnetic field B of strength 0.50 T directed into the plane of the page. R is connected to a circuit and the electric current $I_{\mathrm{R}}$ is 2.0 A .

(a)

Calculate the magnitude of the force per unit length on R.

[ 2 ]

$\begin{aligned} \text { Use of } F=\text { BIL OR F/L = BI } =1.0 \text { « } \mathrm{N} \mathrm{~m}^{-1} \text { » } \text { } \end{aligned}$

(b)

Identify on the diagram the direction of the force on R.

[ 1 ]

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D.3.5—Force on current conductor question 1

Question (a)

Question (b)