A 10 V full-scale voltmeter having 100 k-ohm/ V sensitivity

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A 10 V full-scale voltmeter having 100 k-ohm/ V sensitivity is used to measure the output of a photovoltaic cell having an internal resistance of 1 M-ohm. The voltmeter reads 5V. The voltage generated by the photovoltaic cell is

1. 5 V
2. 10 V
3. greater than 5 V but less than 10 V
4. greater than 10 V

Correct Option: B

Voltmeter resistance = 100 × 10 = 1000 kΩ = 1 MΩ Photovoltaic cell internal resistance = 1 M-ohm.
The voltmeter reads 5V.
Therefore, the internal voltage is 10 V