The resistance of the voltmeter is 12 KOhm. What current is the current passing

The resistance of the voltmeter is 12 KOhm. What current is the current passing through the voltmeter if the device shows a voltage of 12 V?

Given:

R = 12 kOhm – resistance of the voltmeter;

U = 12 Volts – voltage of the electrical network on the voltmeter.

It is required to determine I (Ampere) – the strength of the current passing through the voltmeter.

Let’s convert the units of resistance measurement from kOhm to Ohm:

R = 12 kΩ = 12 * 1000 = 12000 ohms.

To determine the strength of the current passing through the voltmeter, you must use the following formula (Ohm’s law):

U = I * R, from here we find:

I = U / R = 12/12000 = 1/1000 = 0.001 Ampere = 1 mA.

Answer: a current of 1 mA passes through the voltmeter.