Although an ideal voltmeter has an infinite internal resistance, this theoretical ideal is usually not met in practice. The voltmeter in the Figure has an internal resistance of 3 x 109 2 and is used to measure the voltage across the resistor R as shown. Attaching this non-ideal voltmeter decreases the voltage across R. Calculate the magnitude of this decrease using an emf of 20 V and R = R = 200 ks. Submit Answer Tries 0/8 Post Discussion R Send Feedb