Question

You have calculated the current through three parallel resistors used in a lab experiment. Which two of the following evaluations gives you confidence that your answers are reasonable? (select att that apply)

Your measured currents are all equal to the 55 kA current coming out of the battery.

The currents through the three resistors add up to give the current coming out of the battery.

You found 35 kA flowing through the smaller resistor, and 15 kA through the larger resistor.

The resistor closest to the negative terminal of the battery has 5 mA flowing through it, and the resistor closest to the positive terminal of the battery has 80 mA flowing into it.

The resistor closest to the positive terminal of the battery has 75 A flowing through it, and the resistor closest to the negative terminal of the battery has 10 A flowing into it.

Your measured currents are all equal to the 3 mA current coming out of the battery.

You found 45 mA flowing through the smaller resistor, and 5 mA through the larger resistor.

You found 45 mA flowing through the bigger resistor, and 5 mA through the smaller resistor.

You have calculated the current through three series resistors used in a lab experiment. Which of the following evaluations gives you confidence that your answers are reasonable? (sellect all that apply)

Your measured currents are all equal to the 55 kA current coming out of the battery.

You found 45 mA flowing through the largest resistor, and 5 mA through the smallest resistor.

The resistor closest to the negative terminal of the battery has 5 mA flowing through it, and the resistor closest to the positive terminal of the battery has 80 mA flowing into it.

The currents through the three resistors add up to give the current coming out of the battery.

Your measured currents are all equal to the 3 mA current coming out of the battery.

The resistor closest to the positive terminal of the battery has 75 A flowing through it, and the resistor closest to the negative terminal of the battery has 10 A flowing into it.

You found 35 kA flowing through the smallest resistor, and 15 kA through the largest resistor.

You found 45 mA flowing through the smallest resistor, and 5 mA through the largest resistor.

Answer 1

The first evalutions 35 kA flowing through the smaller resistor, and 15 kA through the larger resistor seems correct.This is because the total current coming from the battery is 55kA. In the parallel combination the voltage across each resistor is same but the current divides in the ratio of the resistance, but the total current add up to the current from the battery.

In all the other evalutions, the total current do not add to the current from the battery.Moreover there is a discrepencery in the unit also. For example the current in mA will not add up to give current in kA.