When the current through a resistor is increased by a factor of 4, the power dissipated by it
A) decreases by a factor of 4.
B) decreases by a factor of 16.
C) increases by a factor of 16.
D) increases by a factor of 4.
E) remain unchanged.
C
You might also like to view...
Coulomb's Law: Three point charges are placed on the x-axis, as follows. A charge of +2.0 ?C is at the origin, a charge of -2.0 ?C is at x = 50 cm, and a charge of +4.0 ?C is at x = 100 cm. What are the magnitude and direction of the electrostatic force on the charge at the origin due to the other two charges? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
What will be an ideal response?
Center of Mass: A 3.0-kg mass is located at (0.0 m, 8.0 m), and a 1.0-kg mass is located at (12 m, 0.0 m). You want to add a 4.0-kg mass so that the center of mass (or center of gravity) of the three-mass system will be at the origin. What should be the coordinates of the 4.0-kg mass?
A. (-3.0 m, -6.0 m) B. (-12 m, -8.0 m) C. (3.0 m, 6.0 m) D. (-6.0 m, -3.0 m)
The atmospheric carbon dioxide concentration
A) is higher than it has been at any time during the last 800,000 years B) is higher than it has been at any time during the Earth's history C) has remained roughly constant during the last 800,000 years D) is lower than it has been at any time during the last 800,000 years
You walk 53 m to the north, then turn 60° to your right and walk another 45 m. Determine the direction of your displacement vector. Express your answer as an angle relative to east
A) 63° N of E B) 50° N of E C) 57° N of E D) 69° N of E