PHY100 Ch13

Multiple Choice

Two arrangements of a battery, bulb, and wire are shown below. Which of the two arrangements will light the bulb?

• Arrangement (a)

• Arrangement (b)

• Both

• Neither

Multiple Choice

In the circuit shown, the wires are connected to either side of a wooden block as well as to the light bulb. Will the light bulb light in this arrangement?

• Yes

• No

• Maybe

• Impossible to tell from the picture

Multiple Choice

In the circuit shown, could we increase the brightness of the bulb by connecting a wire between points A and B?

• Yes

• No

• Maybe

• Impossible to tell from the picture

Multiple Choice

Which of the two circuits shown will cause the light bulb to light?

• Arrangement (a)

• Arrangement (b)

• Both

• Neither

Multiple Choice

Suppose we use an uncoated metal clamp to hold the wires in place in the battery-and-bulb circuit shown. Will this be effective in keeping the bulb burning brightly?

• Yes

• No

• Maybe

• Impossible to tell from the picture

Multiple Choice

Consider the two signs shown, located in different physics labs. Which of the two would be reason for greater concern?

• The on on the left

• The one on the right

• Both

• Neither

Multiple Choice

Two resistors are connected in series with a battery as shown. R1 is less than R2. Which of the two resistors has the greater current flowing through it?

• R₁

• R₂

• Both

• Neither

Multiple Choice

Two resistors are connected in series with a battery as shown. R1 is less than R2. Which of the two resistors has the greatest voltage difference across it?

• R₁

• R₂

• Both

• Neither

Multiple Choice

In the circuit shown, the 2- Ω resistance represents the internal resistance of the battery and can be considered to be in series with the battery and the 28-Ω load. What is the current flowing through the 28- Ω resistor?

• 0.1 A

• 0.3 A

• 0.33 A

• 3 A

• 10 A

Multiple Choice

In the circuit shown, the 2-Ω resistance is the internal resistance of the battery and can be considered to be in series with the battery and the 28- Ω load. What is the voltage across the 28- Ω resistor?

• 0.1 A

• 0.3 A

• 1.0 A

• 2.8 A

• 3.0 A

Multiple Choice

Three resistors are connected to a 6-V battery as shown. The internal resistance of the battery is negligible. What is the current through the 15-Ω resistance?

• 0.1 A

• 0.15 A

• 0.4 A

• 1.5 A

• 4.0 A

Multiple Choice

Does this same current flow through the 25-Ω resistance?

• Yes

• No

• It depends on various things

Multiple Choice

What is the voltage difference across the 25-Ω resistance?

• 0.1 V

• 2.5 A

• 6 V

• 25 V

• 60 V

Multiple Choice

Two 10-Ω light bulbs are connected in parallel to one another, and this combination is connected to a 6-V battery. What is the total current flowing from the battery?

• 0.3 A

• 1.2 A

• 6 A

• 12 A

• 0.6 A

Multiple Choice

How much current passes through each light bulb?

• 0.6 A

• 1.2 A

• 6 A

• 12 A

• 60 A

Multiple Choice

Three identical resistors, each 15 Ω, are connected in parallel with one another as shown. The combination is connected to a 10-V battery whose internal resistance is negligible.What is the equivalent resistance of this parallel combination?

• 0.067 $$\Omega$$  

• 0.2 $$\Omega$$  

• 3 $$\Omega$$  

• 5 $$\Omega$$  

• 45 $$\Omega$$  

Multiple Choice

What is the total current through the combination?

• 0.33 A

• 1.5 A

• 2 A

• 5 A

• 10 A

Multiple Choice

How much current flows through each resistor in the combination?

• 0.67 A

• 0.5 A

• 1.0 A

• 1.5 A

• 12 A

Multiple Choice

In the circuit shown, R3 is greater than R2, and R2 is greater than R1. Ɛ is the electromotive force of the battery whose internal resistance is negligible. Which of the three resistors has the greatest current flowing through it?

• R₁

• R₂

• R₃

• R₁ and R₂ are equal, and greater than R₃

• They are all equal

Multiple Choice

In the circuit shown, the circle with a V in it represents a voltmeter. Which of the following statements is correct?

• The voltmeter is in the correct position for measuring the voltage difference across R

• No current will flow through the meter, so it will have no effect

• The meter will draw a large current

Multiple Choice

In the circuit shown, the circle with an A in it represents an ammeter. Which of the following statements is correct?

• The meter is in the correct position for measuring the current through R

• No current will flow through the meter, so it will have no effect

• The meter will draw a significant current from the battery

Multiple Choice

What is the power dissipated in a 20-Ω light bulb powered by two 1.5-V batteries in series?

• 0.15 W

• 0.45 W

• 3.0 W

• 6.67 W

• 60 W

Multiple Choice

How much does it cost to light a 100-watt light bulb for one day? Assume an average rate of cost of 10 cents per kilowatt-hour.

• 0.24 cents

• 2.4 cents

• 24 cents

• $2.40

• $24

Multiple Choice

A 60-W light bulb is designed to operate on 120 V ac. What is the effective current drawn by the bulb?

• 0.2 A

• 0.5 A

• 2.0 A

• 72 A

• 7200 A