(abbreviated G); 1 G = 10−4 T.
- A charge +q = +6 × 10−6 C moves with speed v = 4 × 10^5 m/s
through a magnetic field of strength B = 0.5 T, as shown in the figure
below. What is the magnetic force experienced by q?
Here’s How to Crack It
The magnitude of FB is
FB = qvB sin θ= (6 × 10−6 C)(4 × 10^5 m/s)(0.5 T) sin 30° = 0.6 N.The right-hand rule on the previous page was designed for situations in which the
charged particle moves perpendicular to B. We can use it for our example if we
point the thumb in the direction of the component of v that is perpendicular to B
(up). B points to the right and therefore FB is into the page.