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PhysicsNEET 2019Ohm's law, resistivity, temperature dependence

Current Electricity

Circuit 1 has a 10 V source driving current i1i_1 through a10Ωa 10 \Omega resistor, with an ideal ammeter A1A_1 in series and an ideal voltmeter V1V_1 connected across the resistor-and-ammeter combination. Circuit 2 has the same 10 V source, 10Ω10 \Omega resistor and current i2i_2, with ideal ammeter A2A_2 in series, but this time ideal voltmeter V2V_2 is connected across the resistor alone (not including the ammeter). The readings of the voltmeters and ammeters will be:

  1. A.V2>V1V_2 > V_1 and i1=i2i_1 = i_2
  2. B.V1=V2V_1 = V_2 and i1>i2i_1 > i_2
  3. C.V1=V2V_1 = V_2 and i1=i2i_1 = i_2✓
  4. D.V2>V1V_2 > V_1 and i1>i2i_1 > i_2

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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