A resistance of 55 ?, a capacitor of capacitive reactance 30 ?, and an inductor of inductive reactance 30 ? are connected in series to a 110-V rms 60-Hz power source. What rms current flows in this circuit?
A) 4.0 A
B) less than 2.0 A
C) more than 2.0 A but less than 4.0 A
D) more than 4.0 A
E) 2.0 A
E
You might also like to view...
A satellite encircles Mars at a distance above its surface equal to 3 times the radius of Mars. The acceleration of gravity at the satellite, as compared to the acceleration of gravity on the surface of Mars, is
A) one-ninth as much. B) zero. C) the same. D) one-third as much. E) one-sixteenth as much.
A charge of 25 nC is uniformly distributed along a circular arc (radius = 2.0 m) that is subtended by a 90-degree angle. What is the magnitude of the electric field at the center of the circle along which the arc lies?
A. 81 N/C B. 61 N/C C. 71 N/C D. 51 N/C E. 25 N/C
A book rests on a table, and the table rests on the ground. Which of the following pairs of forces forms a force pair, or action-reaction pair, obeying Newton's law of force pairs?
A) Gravity pulling down on the table and the book pushing down on the table. B) The ground pushing up on the table and the book pushing down on the table. C) The table pushing up on the book and the book pushing down on the table. D) Gravity pulling down on the book and the book pushing down on the table. E) Gravity pulling down on the book and the table pushing up on the book.
Buoyancy: A wooden raft has a mass of 55 kg. When empty it floats in water (density 1000 kg/m3) with 64% of its volume submerged. What maximum mass of sand can be put on the raft without sinking it?
Fill in the blank(s) with the appropriate word(s).