Equal currents of magnitude I travel out of the page in wire M and into the page in wire N. Eight directions are indicated by letters A through H.
The direction of the magnetic field at point P is
A. A.
B. B.
C. C.
D. D.
E. E.
Answer: C
You might also like to view...
One helpful development regarding the atmospheric ozone problem was the international agreement to
A) significantly reduce ozone production by year 2000. B) issue free sunglasses to everybody. C) significantly reduce CFC production by year 2000. D) reduce fossil fuel use by 50 percent by year 2000. E) produce more ozone and inject it into the stratosphere.
Muons at speed 0.9994c are sent round and round a circular storage ring of radius 1500 m. If a muon at rest decays into other particles after an average T = 2.2 × 10^-6 s, how many trips around the storage ring do we expect the 0.9994c muons to make before they decay?
a. 2 c. 0.2 b. 4 d. 6
How many degrees of hardness are defined
on the Mohs hardness scale? a) 3 b) 7 c) 10 d) 12
Terrence goes for a walk. He walks 2.0 km north, then turns and walks 4.0 km south of east. What is his displacement vector? Take east to be in the +-direction and north to be in the +-direction.
a. (2.0 + 4.0 ) km b. (2.8 – 0.8 ) km c. (4.8 + 5.7 ) km d. (5.7 – 2.8 ) km