- #1
Turbo Math
- 6
- 0
Homework Statement
A wire extends horizontally from east to west. The mass of its meter is (0.18)g and it carries a current of (1)A. If the wire is in a magnetic filed (0.5)T that heads horizontally upwards, determine the least current that makes the magnetic force equal the wire weight
Homework Equations
F = BIl sin θ
The Attempt at a Solution
at first i don't understand what does "heads horizontally upwards" means so this is where i end up:
mg = BIl sin θ
(0.18E-3) x 10 = 0.5x1x1 sin θ
θ = sin^-1(1.8E-3/0.5)
θ = 0.2