A battery with negligible internal resistance is connected in series with a resistor

PHYSICS · Single correct · A Level · Physics · Electricity · Electricity

Problem

12\,\text{V}

battery with negligible internal resistance is connected in series with a

60\,\Omega

resistor. Two ammeters are available: • Ammeter X: internal resistance

1.0\,\Omega

• Ammeter Y: internal resistance

5.0\,\Omega

After each ammeter is inserted (one at a time) in series with the resistor, which pair of current readings is obtained? (a) Ammeter X:

0.200\,\text{A}

; Ammeter Y:

0.200\,\text{A}

(b) Ammeter X:

0.197\,\text{A}

; Ammeter Y:

0.185\,\text{A}

0.185\,\text{A}

; Ammeter Y:

0.197\,\text{A}

(d) Ammeter X:

0.200\,\text{A}

; Ammeter Y:

0.185\,\text{A}