What would be the readings of the ammeter and the voltmeter
Consider the following circuit:
What would be the readings of the ammeter and the voltmeter when key is closed? Give reason to justify your answers.
Answer
R = R1 + R2 + R3
R = 5 Ω + 8 Ω + 12 Ω = 25 Ω
V = 6 V
V = IR
∴ I = V/R
= 6 V / 25Ω = 0.24 A
Hence, Current through 12 Ω resistance is A = 0.24 A.
V = IR = 6 A × 12 Ω / 25
= 2.88 V