CAIE A-Level Physics AS M 2 Algebra Mode…sistency

[Maximum number: 2]

The electric field strength E at a distance x from an isolated point charge Q is given by the equation

E=\frac{Q}{x^{2} b}

where b is a constant.

Use the units for E given in (b)(i) to determine the SI base units of b.

SI base units of b

$\begin{aligned} b =Q / X^{2} E =\mathrm{As} / \mathrm{m}^{2} \mathrm{kgmA}^{-1} \mathrm{~s}^{-3} \end{aligned}$ $=\mathrm{A}^{2} \mathrm{~s}^{4} \mathrm{~kg}^{-1} \mathrm{~m}^{-3}$

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CAIE A-Level Physics AS M 2 Algebra Models Units and Dimensional Consistency Topic Practice

Question 1