determine the magnetic field between 2 long straight wires 2cm apart in terms of the current (I) in one, when the other carries 15A. Assume currents are in the same direction.(adsbygoogle = window.adsbygoogle || []).push({});

okay so if they're in the same direction the field should be up

now I'm guessing I should use (4pi x 10^ -7)/(2pi) (I1 x I2)/(d) = F/l

now from that I'm guessing the length of the wire is no a factor here

so I get ((2 x 10 ^ -7)(I1 x I2))/d = F

now.... where should I go from here?

**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!

# Homework Help: Determine the magnetic field between 2 long straight wires

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