Science
Redraw the circuit of Question 1, putting in an ammeter to measure the current through the resistors and a voltmeter to measure the potential difference across the 12 Ω resistor. What would be the readings in the ammeter and the voltmeter?
Current Electricity
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Answer
According to Ohm's Law,
V = IR
The total resistance of the circuit is 5 Ω + 8 Ω + 12 Ω = 25 Ω.
Potential difference (V) = 6 V,
I = = 0.24 A
Hence, current shown in ammeter = 0.24 A
Let potential difference across the 12 Ω resistor be V1.
V1 = 0.24 × 12 = 2.88 V
Therefore, the voltmeter reading will be 2.88 V.
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