A circular coil lies flat on a horizontal surface. A bar magnet is held above the center of the coil with its north pole pointing down
If the magnet is dropped from this position what is the direction of the induced current in the coil, as viewed from above? A) counterclockwise
B) clockwise
C) An emf but no current is induced in the coil.
D) There is no current in the coil.
A
You might also like to view...
If a person's eyeball is too short from front to back, the person is likely to suffer from
A) astigmatism. B) spherical aberration. C) chromatic aberration. D) farsightedness. E) nearsightedness.
In his calculations, Bohr came across a number now called the "Bohr radius". This number is 5.29 X 10-11 m and is
Three resistors of 4.0, 6.0, and 10.0 ? are connected in parallel. If the combination is connected in series with a 12.0-V battery and a 2.0-? resistor, what is the current through the 10.0-? resistor?
A) 0.59 A B) 2.7 A C) 6.4 A D) 11.2 A E) 16.0 A
Ekapluto is an unknown planet that has two moons in circular orbits. The table summarizes the hypothetical data about the moons
Mass Radius Orbital Radius Orbital period Moon A 4.0 × 1020 kg 2.0 × 108 m 4.0 × 106 s Moon B 1.5 × 1020 kg 2.0 × 105 m 3.0 × 108 m The orbital period of Moon B is closest to A) 5.6 × 106 s. B) 6.0 × 106 s. C) 6.4 × 106 s. D) 6.9 × 106 s. E) 7.3 × 106 s.