(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two wires are both 22.3 meters in length and carry perpendicular currents as shown the the left. I1 = 4.5 A and I2 = 6.3 A. Points A and B are located an equal distance from both wires with d = 17 cm.

a) What strength of the magnetic field at A?

c) What strength of the magnetic field at B?

2. Relevant equations

SIGMA B DELTA L=MEWo * I

F = ILBSIN(theta)

3. The attempt at a solution

The problem gives the following 'help' features:

HELP: Use Ampere's Law

HELP: YOu can just add up the separate magnetic field strengths from both wires separately

HELP: Did you take into account the direction of the field from each wire?

I am having trouble relating equations that would take distance between the wire and the points (diagram at this link: https://wug-s.physics.uiuc.edu/cgi/cc/shell/DuPage/Phys1202/spring-evening/tma.pl?Ch-22-B-Fields/B_from_crossed_wires#pr [Broken] )

... I've tried to individually add the values for field strengths, (1.257e-6 * 4.5)/(22.3) + ((1.257e-6 * 6.3)/(22.3), I've also tried changing the signs in the different possibilities, any proper equations would be helpful, thanks.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Magnetic Field from Crossed Wires

Can you offer guidance or do you also need help?

**Physics Forums | Science Articles, Homework Help, Discussion**