A power supply of electromotive force (e.m.f.) 12 V is connected across a 3 Ω resistor.
Which ammeter is most suitable to measure the current in the resistor?
1 )
an ammeter with a range 0–0.5 A
2 )
an ammeter with a range 0–1 A
an ammeter with a range 0–5 A
4 )
an ammeter with a range 0–50 A
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