Equivalent resistance for 2 resistors in parallel:

$\overline{){{\mathbf{R}}}_{{\mathbf{eq}}}{\mathbf{=}}\frac{{\mathbf{R}}_{\mathbf{1}}{\mathbf{R}}_{\mathbf{2}}}{{\mathbf{R}}_{\mathbf{1}}\mathbf{+}{\mathbf{R}}_{\mathbf{2}}}}$

**Measured Data: Kirchhoff's Laws - Voltage and Current in Circuits**

The voltage across and the current through each resistor are shown in the schematic diagram below.

1) Using the schematic of the circuit, calculate the total resistance of the circuit.

R_{eq} = ?

2) Based on the theoretical value of R_{3} and the voltage measured at R_{3}, calculate the theoretical value of the current l_{3} using Ohm's Law.

I_{theoretical} = ?

3) What do the results suggest about the current coming into a junction and the current leaving a junction?

A. The sum of the currents coming into a junction is three times the sum of the currents leaving a junction.

B. The sum of the currents coming into a junction is equal to the sum of the currents leaving a junction.

C. The sum of the currents coming into a junction is twice the sum of the currents leaving a junction.

D. The sum of the currents coming into a junction is half of the sum of the currents leaving a junction.

4) Through any pathway around the circuit, what is the relationship between the total voltage supplied and the voltages along the pathway?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

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