IIT JAM
Sayan Asked a Question
May 26, 2020 1:54 pmpts 30 pts
  • IIT JAM
  • Physics (PH)

Calculate the resistance of the circuit

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  • Dhairya sharma Best Answer
    I understand that voltmeters are supposed to have high internal resistances so that they won't draw much current. However, they are being attached parallel to the resistor anyways ...
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    Dhairya sharma
    The voltmeter is connected parallel to a component of the circuit. This means the resistance (or impedance) of that part of the circuit is going to change, which in general changes...
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  • Ruby negi thankyou
    while doing this question, I kept in mind following things: 1) Current is same in series(that's why current through 2M-ohm is same through Rb) (2) formula of equivalent resistance ...
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    Ruby negi
    3) in overall circuit, I used KVL and then I found Rb.. (4) after Rb, I know the voltage across Rb so using this I can find the internal resistance of voltameter across Rb...
  • Ruby negi thankyou
    option c is correct...
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    Ruby negi
    for any query, ask please...