Problem 2

A straight wire segment of length

L=0.40\,\mathrm m

carries steady current

I=3.0\,\mathrm A

in a uniform field

B=0.50\,\mathrm T

. The field makes angle

\alpha=30^\circ

with the current; end effects are neglected. (a) Determine the magnetic-force magnitude. (b) Evaluate it for these data. (a) Find the first requested quantity. (b) Find the second quantity. (c) Determine the final result and check its units. (a) (a) Express the magnetic force as a cross product. (b) Find its magnitude. (c) Evaluate it and state when the force vanishes.

problems.proof.stepOf

problems.proof.prevStep problems.proof.nextStep

\\boxed{F=ILB\\sin\\alpha=0.300\\,\\mathrm N}

problems.proof.analysis

Collect the results for all parts in one place. This makes clear that they use the same data and a consistent sign convention.