A complex circuit consists of some resistors. An ideal current source is then connected through two points at the circuit. Then an ideal voltmeter is connected to two nodes of a resistor in the circuit. Reading of the voltmeter is V.Then the voltmeter is substituted with an ideal ammeter. The reading is I.
If the current source is then disconnected to the circuit and the ammeter is substituted with ohmmeter, prove that reading of the ohmmeter is V/I!

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