How does the resistance of a thick piece of copper wire compare to the resistance of a thin piece of copper wire?
A. The resistance of the thin piece is greater than that of the thick piece.
B. The resistance of the thick piece is greater than that of the thin piece.
C. Both the wire and narrow piece of copper provide the same resistance.
Answer: A. The resistance of the thin piece is greater than that of the thick piece.
You might also like to view...
Thin Films: When a light wave enters into a medium of different refractive index,
A. only its speed and frequency change. B. only its speed and wavelength change. C. only its frequency and wavelength change. D. its speed, frequency, and wavelength change.
The type of asteroid that would appear darkest and reflect the least light is type:
A) A. B) B. C) C. D) D. E) S.
A billiard ball is moving in the x-direction at 30.0 cm/s and strikes another billiard ball moving in the y-direction at 40.0 cm/s. As a result of the collision, the first ball moves at 50.0 cm/s, and the second ball stops. What is the change in kinetic energy of the system as a result of the collision?
a. 0 b. some positive value c. some negative value d. No answer above is correct.
An airplane flying faster than the speed of sound of 340 m/s produces a shock wave with an angle ?0 = 50°. What is the speed of the plane?
A) 490 m/s B) 530 m/s C) 390 m/s D) 440 m/s E) 405 m/s