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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 20 - Heating Effects of Current and Instruments > In figure, when an ideal voltmeter is connected across 4000 ohm resistance, it reads 30 V. If the voltmeter is connected across 3000 ohm resistance, it will read.

In figure, when an ideal voltmeter is connected across 4000 ohm resistance, it reads 30 V. If the voltmeter is connected across 3000 ohm resistance, it will read.

In figure it reads 30 V. If the voltmeter is connected across 3000 ohm resistance it will read when an ideal voltmeter is connected across 4000 ohm resistance