Question
Repeat Exercise 22.48, but with the loop lying flat on the ground with its current circulating counterclockwise (when viewed from above) in a location where the Earth’s field is north, but at an angle $45.0^\circ$ below the horizontal and with a strength of $6.00 \times 10^{-5} \textrm{ T}$.

#### Exercise 22.48

(a) A 200-turn circular loop of radius 50.0 cm is vertical, with its axis on an east-west line. A current of 100 A circulates clockwise in the loop when viewed from the east. The Earth’s field here is due north, parallel to the ground, with a strength of $3.00 \times 10^{-5} \textrm{ T}$ . What are the direction and magnitude of the torque on the loop? (b) Does this device have any practical applications as a motor?
1. $0.666 \textrm{ N}\cdot\textrm{m}$
2. This is a very small torque, so it's unlikely to have a practical application. This torque would be able to lift only a 0.27kg weight placed on the loop.
Solution Video