A person discovers that the 5 ampere fuse in his car's brake light circuit is blown. Not having a spare 5 ampere fuse available, he replaces it with a new 10 ampere fuse. What is likely to happen as he uses the brakes?
A. The circuit overheats and the brake lights do not work
B. The fuse blows immediately
C. Nothing bad happens; everything works well for a long time
D. The brake lights shine more dimly than before
Answer: A
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Two solenoids of equal length are each made of 2 000 turns of copper wire per meter. Solenoid I has a 5.00 cm radius; solenoid II a 10.0 cm radius. When equal currents are present in the two solenoids, the ratio of the magnitude of the magnetic field BI along the axis of solenoid I to the magnitude of the magnetic field BII along the axis of solenoid II, BI/BII, is
a. 1/4. b. 1/2. c. 1. d. 2. e. 4.
The semi major axis of an ellipse is
a. the ratio of the longest diameter of the ellipse to that of the shortest diameter of the ellipse. b. half the length of the shortest diameter of the ellipse. c. half the length of the longest diameter of the ellipse. d. the distance between the two foci of the ellipse. e. the ratio of the distance between the two foci to the length of half the longest diameter of the ellipse.
In simple harmonic motion, the restoring force must be proportional to the:
A. amplitude B. frequency C. velocity D. displacement E. displacement squared
Compare and contrast the Galileo and Cassini missions
What will be an ideal response?