The circuit in which the voltmeter and the ammeter are correctly arranged to determine the value of the unknown resistance R is
A) 1
B) 2
C) 3
D) 4
E) 5

Question

The circuit in which the voltmeter  and the ammeter  are correctly arranged to determine the value of the unknown resistance R is
A) 1 
B) 2 
C) 3 
D) 4 
E) 5

Quizplus · Accepted Answer

The correct circuit to determine the value of R should have the ammeter in series with the unknown resistor and the voltmeter in parallel with the unknown resistor. Option 1 has the ammeter in parallel while option 2 and 4 have both meters in series. Option 5 has the voltmeter connected in a way that bypasses the unknown resistor. Option 3 alone has the ammeter in series with the unknown resistor and the voltmeter in parallel with the unknown resistor, making it the correct choice.

The Circuit in Which the Voltmeter and the Ammeter