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The emf E and the internal resistance r ...

The emf `E` and the internal resistance r of the battery shown in figure are `4.3 V` and `1.0 Omega` respectively. The external resistance `R` is `50 Omega`. The resistances of the ammeter and voltmeter are `2.0 Omega` and `200 Omega` respectively.
(a) Find the readings of the two meters.
(b) The switch is thrown to the other side. What will be the readings of the two meters now?

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