Answer to Question #189761 in Electric Circuits for martin cordero

Question

What is the voltmeter reading across the R2 resistor in a series circuit containing a 12 V potential and three resistors R1= 3 ohms, R2=2 ohms, and R3= 1 ohm?

Answer 1

We have given the Circuit Potential $V = 12V$

Three resistance are connected in series,

then equivalent resistance = $2+3+1 = 6\Omega$

Current in the circuit, $I = \dfrac{12}{6} = 2A$

Hence, Voltmeter reading across resistance $R_2 = IR_2 = 2 \times 2 = 4V$