IB Physics HL 6.3.3 Units and numerical values Question Bank

Practise IB Physics SL/HL 6.3.3 by applying units and numerical values 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]

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 .

$\quad B$ is removed and a wire Z, carrying a current $I_{Z}$ , is placed parallel to R.

Figure for Question S1.3.3—Units and numerical values question 1 — IB Physics HL

Derive the units of $\mu_{0}$ in SI fundamental units.

$\mathrm{kg} \mathrm{m} \mathrm{s}^{-2} \mathrm{~A}^{-2}$

Marking guidance:

Allow fractional answers such as:
$\frac{k g m}{s^{2} A^{2}}$

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S1.3.3—Units and numerical values question 1