A student wishes to measure the current through a 10Ω resistor connected to a cell using an ammeter. The student first sets up the circuit correctly and then accidentally reconnects the ammeter directly across the resistor terminals.
(i) Describe qualitatively what will happen in the circuit when the ammeter is connected across the resistor instead of in series with it. Explain your answer.
(ii) Give two reasons why connecting an ammeter in parallel with a low-resistance component is considered unsafe during laboratory work.
(iii) List two precautions that must be taken while using an ammeter to ensure both the safety of the instrument and the accuracy of the reading.