A voltmeter with a resistance 50 xx 10^(...

A voltmeter with a resistance `50 xx 10^(3) Omega` is used to measure voltage in a circuit. To increase its range to 3 times, the additional resistance to be put in series is

`10^5Omega`

`900 K Omega`

`150 K Omega`

`9xx 10^6 Omega`

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