Resistors 8 kΩ and 1 kΩ connected in series. Determine the voltmeter readings at the extreme connection

Resistors 8 kΩ and 1 kΩ connected in series. Determine the voltmeter readings at the extreme connection points if the current in the circuit is 3 mA. What will the voltmeter show when connected to the first and second resistor?

Given:
R1 = 8 kΩ;
R2 = 1 kΩ;
I = 3 mA.
Find U, U1, U2.

Let’s convert kOhm to Ohm, mA to A:

R1 = 8 kΩ = 8000 Ω;
R2 = 1 kOhm = 1000 Ohm;
I = 3 mA = 0.003 A.

Voltmeter reading on the first resistor

U1 = I * R1 = 0.003 * 8000 = 24 V,

on the second resistor

U2 = I * R2 = 0.003 * 1000 = 3 V.

The resistors are connected in series, which means

U = U1 + U2 = 24 + 3 = 27 V.

Answer: 27 V; 24V; 3 B.