The reading of the voltmeter will be 2.88 V. ![]() According to Ohm's law, V = IR, where, Potential difference, V = 6 V Current flowing through the circuit/resistors = I Resistance of the circuit, R = 5 + 8 + 12 = 25 ohm I = 0.24 A Potential difference across 12 ohm resistor = V I Current flowing through the 12 ohm resistor, I = 0.24 A Therefore, using Ohm's law, we obtain V 1 = IR = 0.24 x 12 = 2.88 V Therefore, the reading of the ammeter will be 0.24 A. Concept Insight:- Ohm's law can be used to obtain the readings of ammeter and voltmeter. ![]() To measure the potential difference across the 12 ohm resistor, a voltmeter should be connected in parallel to this resistor, as shown in the following figure. To measure the current flowing through the resistors, an ammeter should be connected in the circuit in series with the resistors.
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