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Preparation

Do math right

• calculate fractions correct: \begin{align*} {{{A}\over{B}}\over{C}} \quad &\neq \quad {{A}\over{{B}\over{C}}} \\ {{{A}\over{B}}\over{C}} = {{A}\over{{B}\cdot{C}}} \quad &\neq \quad {{A}\over{{B}\over{C}}} = {{A\cdot C}\over{B}} \end{align*}

Do physics right

• Check the units. e.g. $dB$ cannot be converted in $V$

Do exam right

• Do not miss out questions. Sometimes there is more than one answer required