In figure, the e.m.f. of the cell is 120V and internal resistance is negligible. The resistance of the voltmeteris 80 ohm. The % error in reading of voltmeter will be

In figure, the e.m.f. of the cell is 120V and internal resistance is n

1.	In figure, the e.m.f. of the cell is 120V and internal resistance is negligible. The resistance of the voltmeteris 80 ohm. The % error in reading of voltmeter will be
Answer» `20%` `16.7%` `21.2%` `12.8%` SOLUTION :Ideal voltmeter should measure (V) `=(120xx80)/(100)=96"Volt"` Voltmeter will measure (V) `=(120xx40)/(60)` = 80 volt `THEREFORE%"error"=(96-80)/(96)xx100` `=(16)/(96)xx100=(50)/(3)=16.7%`

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In figure, the e.m.f. of the cell is 120V and internal resistance is negligible. The resistance of the voltmeteris 80 ohm. The % error in reading of voltmeter will be

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