exam question about voltmeters and their loading effect on a circuit

Thread Starter

bart3b

Joined Jun 12, 2009
3
I'm half way through dc circuits class and have come to a roadblock, the subject deals with voltmeters and their loading effect.
The question is: A 15V battery connected in series with a 1kohm resistor is tested with a 20000 ohms per volt voltmeter at the 20V range. What does the circuit measure?
I'm looking for the formula or combination of formulas needed to solve this. If you can help, thanks.
 

Thread Starter

bart3b

Joined Jun 12, 2009
3
Meter is measuring voltage in circuit, input R in meter is 400k ohms
 

Thread Starter

bart3b

Joined Jun 12, 2009
3
Voltage is equal across all components. Total current equals the sum of individual branch currents. Total R equals total voltage divided by total current and total resistance is always less than individual branch resistors.
 
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