Magnetic Field Produced by Straight Currents Video Lessons

Concept

Problem: Two long, straight, parallel wires. 10.0 cm apart carry equal 4.00-A currents in the same direction. as shown in the figureFind the magnitude of the magnetic field at point P3, 20.0 cm directly above P1.What is its direction?A) to the left B) to the right C) upward D) downwardE) no field

FREE Expert Solution

Magnetic field:

$\overline{){\mathbf{B}}{\mathbf{=}}\frac{{\mathbf{\mu }}_{\mathbf{0}}\mathbf{i}}{\mathbf{2}\mathbf{\pi }\mathbf{r}}}$

r = sqrt [202 + (10/2)2] = 20.6 cm

Magnetic field due to the first wire:

B1 = (4π × 10-7)(4.00)/(2π)(20.6 × 10-2) = 3.88 × 10-6 T

Magnetic field due to the second wire:

B2 = (4π × 10-7)(4.00)/(2π)(20.6 × 10-2) = 3.88 × 10-6 T

The angle between B1 and B2 is θ

82% (182 ratings)
Problem Details

Two long, straight, parallel wires. 10.0 cm apart carry equal 4.00-A currents in the same direction. as shown in the figure

Find the magnitude of the magnetic field at point P3, 20.0 cm directly above P1.

What is its direction?

A) to the left

B) to the right

C) upward

D) downward

E) no field

Frequently Asked Questions

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

Our tutors have indicated that to solve this problem you will need to apply the Magnetic Field Produced by Straight Currents concept. You can view video lessons to learn Magnetic Field Produced by Straight Currents. Or if you need more Magnetic Field Produced by Straight Currents practice, you can also practice Magnetic Field Produced by Straight Currents practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Criss' class at USF.