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# a complete circuit is left on for several minutes, causing the connecting copper wire to become hot. as the temperature of the wire increases, the electrical resistance of the wire

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## Combination Circuits

Find and create gamified quizzes, lessons, presentations, and flashcards for students, employees, and everyone else. Get started for free! ## 11th

11th Combination Circuits

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## 20 Qs

Show Answers See Preview 1. Multiple-choice 30 seconds 5 pts Q.

### Total resistance in a series circuit

Rt = R1 + R2 + R3 ...

1/Rt = 1/R1 + 1/R2 ...

Rt = R1 X R2 / R1 + R2 ...

Rt = RN / RV 2. Multiple-choice 45 seconds 5 pts Q.

### What kind of circuit is this?

answer choices series parallel 3. Multiple-choice 30 seconds 5 pts Q.

### Which of the following is the symbol for current?

answer choices A V Ω I 4. Multiple-choice 2 minutes 5 pts Q.

### What is the total resistance in this circuit?

answer choices 18000 ohms 1800 ohms 180 ohms none of the others 5. Multiple-choice 2 minutes 5 pts Q.

### What is the total resistance in this circuit?

answer choices 625 kΩ .625 mΩ 625 Ω 6.25 kΩ 6. Multiple-choice 30 seconds 5 pts Q.

### What is the total resistance of this circuit?

answer choices 0 Ω -1 Ω 25 Ω 1 Ω 7. Multiple-choice 1 minute 5 pts Q.

### What must be inserted between points A and B to establish a steady electric current in the incomplete circuit represented in the diagram below?

magnetic field source

switch

source of potential difference

voltmeter 8. Multiple-choice 1 minute 5 pts Q.

### Two resistors are connected to a source of voltage as shown in the diagram below. At which position should an ammeter be placed to measure the current passing only through resistor R1?

answer choices 1 2 3 4 9. Multiple-choice 3 minutes 5 pts Q.

### A 9.0-volt battery is connected to a 4.0-ohm resistor and a 5.0-ohm resistor as shown in the diagram below. What is the current?

answer choices 1.0 Amps 1.3 Amps 1.8 Amps 9 Amps 10. Multiple-choice 1 minute 5 pts Q.

### A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire

answer choices increases decreases remains the same 11. Multiple-choice 1 minute 5 pts Q.

### Which of the following is true of the circuit when switch S is open

the circuit doesn't work

both R1 and R2 work only R1 works only R2 works 12. Multiple-choice 30 seconds 5 pts Q.

### Which best describes a parallel circuit?

Electricity flows along one pathway.

The flow of electricity comes from one source.

Electricity flows along more than one pathway.

The flow of electricity comes from more than one source.

13. Multiple-choice 1 minute 5 pts Q.

### According to this law, the current in a circuit equals the voltage difference divided by the resistance.

Law of Conservation of Energy

Ohm's Law

Law of Conservation of Charges

Newton's First Law 14. Multiple-choice 30 seconds 5 pts Q.

### Which one uses less wire?

answer choices Parallel circuit Series Circuit 15. Multiple-choice 30 seconds 5 pts Q.

### What is current measured in?

answer choices Inches Amperes Centimeters Newtons 16. Multiple-choice 3 minutes 5 pts Q.

### This is an example of a ______ circuit

answer choices Series Parallel Open Dihexihedral 17. Multiple-choice 1 minute 5 pts Q.

### A volt is a unit of

answer choices charge. . electric potential. energy. work. 18. Multiple-choice 30 seconds 5 pts Q.

### Which of the following is the energy source?

answer choices Battery Light bulb Wire All of them 19. Multiple-choice 30 seconds 5 pts Q.

### What are electrons?

Particles with negative charge

Particles with positive charge

Particles with neutral charge

None of them 20. Multiple-choice 1 minute 5 pts Q.

### A material in which electrons are able to move easily

answer choices Circuit Insulator Resistance Conductor

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## Electricity Flashcards

Study with Quizlet and memorize flashcards containing terms like In order to produce a magnetic field an electric charge must be:, A student rubbed to non-metal rods, each of a different material, with two different cloths. She found that the two rods then attracted each other. What is the most likely explanation?, What is the voltage of the battery when the ammeter reads 4.0 amperes? and more. ## Electricity

Term 1 / 104

In order to produce a magnetic field an electric charge must be:

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Definition 1 / 104 moving

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Created by natalirivera95

### Terms in this set (104)

In order to produce a magnetic field an electric charge must be:

moving

A student rubbed to non-metal rods, each of a different material, with two different cloths. She found that the two rods then attracted each other. What is the most likely explanation?

The combination of rods and cloths stripped electrons from one rod and added electrons to the other.

What is the voltage of the battery when the ammeter reads 4.0 amperes?

16v

In the circuit above, 3.0 amperes of current passes through the light bulb. The resistance of the light bulb is 1.5 ohms. What is the voltage of the battery?

4.5 V

Which switch in the diagram above, if opened, will cause the light bulb to stop glowing?

switch Q

Four 5.0 Ω resistors are connected in parallel across a battery. What is the equivalent resistance of the circuit?

1.3 ohms

If we were to draw in the electric field around an isolated negative charge using a vector field diagram, what would be the ratio of the length of the vector 12 mm away from the negative charge to the length of the vector 72 mm away?

36

Which of the following statements best expresses the right-hand rule for an electric current and the magnetic field it produces?

If you point your thumb in the direction of the current, then your curled fingers show the direction of the magnetic field.

What will happen when a light bulb is removed from the one of the bulb holders in the circuit above, leaving a gap?

The brightness of the remaining bulbs will not change.

Two charges, Q1 and Q2, are equal in magnitude. The electric field midway between them points from Q2 to Q1. What are the signs of the charges on Q1 and Q2, respectively?

Q1 is negative, Q2 is positive

What is the current in a copper wire that has a resistance of 2.0 ohms and is connected to a 9.0 volt electrical source?

4.5 A

A charge of 30.0 coulombs passes through a 24 ohm resistor in 6.0 seconds. What is the current through the resistor?

5.0 A

Two charged particles are 0.080 m apart. They are moved until the force between them is 16 times greater. How far apart are the charges?

0.020 m

What is the total resistance of the circuit shown above?

39 ohms

Four charges of equal magnitude are placed in the corners of a square as shown. If a positive charge is placed exactly at the center of the square, which direction will it move?

It will move to the right,

In the diagram above, proton p, neutron n, and electron e are located as shown between two oppositely charged plates. The magnitude of acceleration will be greatest for the

electron because it has the smallest mass.

A piece of wire 15.0 cm long has a current of 3.10 Amperes flowing through it and is sitting in a uniform magnetic field which has an intensity of 0.450 Tesla. The wire is oriented perpendicularly to the magnetic field as shown above. What will be the magnitude of the resulting magnetic force?

0.209 N

What is the strength of the electric force between two charges, each of charge +5.7 μC, separated by 40.0 cm?

1.8 N

What net charge forms on a Calcium ion when it loses electrons to stabilize its valence shell?

+2

How does a circuit breaker protect a refrigerator?

When the current is too high, a resettable switch opens the circuit

What kinds of objects are made of material through which charges do not move easily?

insulators

Gravitational forces differ from electrostatic and magnetic forces in that gravitational forces are

attractive only

If 10.0 coulombs of charge are transferred through an electric circuit in 5.00 seconds, then the current in the circuit is?

2.00 A

Which of the following can be used to detect the presence of a magnetic field?

All of these

What happens when a rubber balloon is rubbed with a piece of fur, giving it a negative charge?

Electrons are added to the balloon

Two magnets are held a distance of 2 cm apart in an orientation for which they attract each other, but cannot move. Different objects are inserted between the magnets. Which of the following materials is most likely to change the net force on a magnet?

a steel spoon

The electrostatic force, FE, varies inversely with the square of the distance between the centers of two charged objects is

Coulomb's Law

The magnitude of the magnetic force on a current carrying wire is dependent on

all of the above

What is the meaning of the word "permanent" when used to describe a magnet?

Magnetism persists independent of other magnetic objects.

A generator:

converts mechanical energy into electrical energy

A potential drop of 50.0 volts is measured across a 250 ohm resistor. What is the power developed in the resistor?

10 Watts

A 9.0 volt battery is connected to a 4.0-ohm resistor and a 5.0-ohm resistor as shown in the diagram above. What is the current in the 5.0-ohm resistor?

1.0 A

A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases, the electrical resistance of the wire

स्रोत : quizlet.com

## A complete circuit is left on for several minutes, causing the connecting copper wire to become hot. As the temperature of the wire increases

A complete circuit is left on for several minutes, causing the connecting copper wire to become hot ... ) increases for some time and then decreases .