# Magnitude and direction of magnetic field

"Two parallel wires, each carrying a current of I = 1.8 A, are shown in the figure below, where d = 7.1 cm. The current in wire 1 is in the opposite direction of wire 2. Find the direction and magnitude of the net magnetic field at points A, B, and C."

Please see the attached for the full question.

© BrainMass Inc. brainmass.com March 4, 2021, 6:16 pm ad1c9bdddfhttps://brainmass.com/physics/amperes-law/magnitude-direction-magnetic-field-37868

#### Solution Preview

Hello and thank you for posting your question to Brainmass!

The solution is attached below in two formats, one is Word XP format, while the other is in Adobe pdf format. Therefore you can choose the format that is most suitable to you.

Hope this helps.

Thanks again,

Yinon

Figure 1: Our system

(see attached file for the diagram)

Ampere's law in magnetism is equivalent to Gauss' law in electrostatics.

It states that the sum of the magnetic fields along a closed path about a current source is proportional to the current source (If you remember Gauss' law it states that the sum of electric fields over a closed surface about a charge source is proportional to the charge source).

In mathematical terms it states that:

Where 0 is the proportionality ...

#### Solution Summary

This solution is provided in 459 words and is attached as both a .doc and .pdf. Figures are provided to enhance understanding of the problem and Gauss' law in electrostatics to find magnetic field at various points in the circuit.