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A cell of emf 3.4 V and internal resista...

A cell of emf `3.4 V` and internal resistance `3 Omega` is connected to an ammeter having resistance `2 Omega` and an external resistance of `100 Omega`. When a voltmeter is connected across the `100 Omega` resistance, the ammeter reading is `0.04 V`.
Find the resistance of the voltmeter.

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The correct Answer is:
`400Omega, 6/5=3.2V, 68/21=3.238 V`
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A cell of emf 3.4 V and internal resistance 3 Omega is connected to an ammeter having resistance 2Omega and to an external resistance of 100Omega . When a voltmeter is connected across the 100 Omega resistance, the ammeter reading is 0.04 A . Find the voltage reading by the voltmeter and its resistance. Had the voltmeter been an ideal one what would have been its reading?

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