Questions from College Physics

Q: A capacitor is designed so that one plate is large and the

A capacitor is designed so that one plate is large and the other is small. If the plates are connected to a battery, (a) The large plate has a greater charge than the small plate, (b) The large plate...

Q: A parallel-plate capacitor is disconnected from a battery, and

A parallel-plate capacitor is disconnected from a battery, and the plates are pulled a small distance farther apart. Do the following quantities increase, decrease, or stay the same? (a) C (b) Q (c) E...

Q: Consider positive and negative charges all moving horizontally with the same speed

Consider positive and negative charges all moving horizontally with the same speed through the four regions in Figure 17.2. Rank the magnitudes of the currents in these four regions from lowest to hig...

Q: The diameter of wire A is greater than the diameter of wire

The diameter of wire A is greater than the diameter of wire B, but their lengths and resistivities are identical. For a given voltage difference across the ends, what is the relationship between PA an...

Q: Suppose a current-carrying wire has a cross-sectional area

Suppose a current-carrying wire has a cross-sectional area that gradually becomes smaller along the wire so that the wire has the shape of a very long, truncated cone. How does the drift speed vary al...

Q: Look at the four “circuits” shown in Figure 17.

Look at the four “circuits” shown in Figure 17.6 and select those that will light the bulb. Figure 17.6:

Q: In Figure 17.9b does the resistance of the diode

In Figure 17.9b does the resistance of the diode (a) Increase or (b) Decrease as the positive voltage DV increases? Figure 17.9:

Q: All electric devices are required to have identifying plates that specify their

All electric devices are required to have identifying plates that specify their electrical characteristics. The plate on a certain steam iron states that the iron carries a current of 6.00 A when conn...

Q: Suppose an electrical wire is replaced with one having every linear dimension

Suppose an electrical wire is replaced with one having every linear dimension doubled (i.e., the length and radius have twice their original values). Does the wire now have (a) More resistance, (b) Le...

Q: A high - end gas stove usually has at least one burner

A high - end gas stove usually has at least one burner rated at 14000 Btu/h. (a) If you place a 0.25-kg aluminum pot containing 2.0 liters of water at 20.°C on this burner, how long will it take to br...