In a circuit, R 1 = 10 Ω, R 2 = 100 Ω, and R 3 = 1000 Ω are in parallel going
ID: 2106154 • Letter: I
Question
In a circuit, R1 = 10 Ω, R2 = 100 Ω, and R3 = 1000 Ω are in parallel going from left to right. The wires and the battery in the circuit are ideal (have no resistance).
Which of the following statements about R3 is (are) true?
I3 is zero because the current goes through the path of least resistance.
I3 is zero. The voltage across R3, ΔV3, is zero because all the potential is used up in R1 and R2.
ΔV3 is greater than ΔV1 and ΔV2 because R3 has the largest resistance.
ΔV3 is smaller than ΔV1 and ΔV2 because R3 has the largest resistance.
I3 will decrease if R1 is removed from the circuit.
I3 will increase if R2 is removed from the circuit.
None of the above.
Explanation / Answer
current is not zero anywhere
voltage is same everywhere
if any resistor is removed there is no change in current in other resistors
therefore none of the above are correct