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School Study Stuff > Science: Unit 5 Test > Flashcards

Science: Unit 5 Test Flashcards

Electricity

1
Q

What is electric charge?

A

Electric Charges are the result of subatomic particles

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2
Q

What kind of charges do protons produce?

A

Positive Charges

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3
Q

What kind of charges do electrons produce?

A

Negative Charges

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4
Q

What does electrical force depend on?

A

Strength of the charge of the particles
Distance between the particles

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5
Q

What do electric Charges and forces also cause?

A

Electrical Fields

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6
Q

What is an electric field?

A

The spaces around the particles where the particles exerts electric force on other charged particles

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7
Q

What is greater affinity to electrons?

A

Hold electrons stronger and often gain electrons by friction

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8
Q

What is less affinity for electrons?

A

Hold electrons weaker and often lose more electrons by friction

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9
Q

Greater affinity becomes…

A

Negative

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10
Q

Weaker affinity becomes…

A

Positive

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11
Q

What is induction?

A

Charge without touch or connection to the object

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12
Q

What is conduction?

A

Charge with touch or connection

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13
Q

What is static electricity?

A

Buildup of electric charges on objects

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14
Q

What causes static electricity?

A

Frictions causes electrons to be transferred from one object to another

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15
Q

What is Static Discharge?

A

A sudden flow of electrons from one charged object to another

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16
Q

What is the cause of lightning?

A

Charge separation: During a rainstorm, clouds develop distinct regions of positive and negative charges

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17
Q

What is ground induction?

A

The cloud base repels electrons on the ground below , inducting a charge on the ground surface

18
Q

What is an electric current?

A

Flow of electrons from a place where there are more electrons to a place where there are fewer

19
Q

What is current measured in?

A

Amps

20
Q

Electrical Energy is calculated by multiplying power by the time the device is used. What is the formula for electrical energy?

A

EE=P*T

21
Q

What material allows electrons to not move easily?

A

Insulator

22
Q

A fan operates using a 240 volt and draws 3.5 amperes of current. Determine the power consumed by the motor.

A

840 ohms

23
Q

If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 ohms what is the voltage across the light bulb?

A

20 volts

24
Q

Which subatomic is responsible for the flow of electric current in a conductor?

A

Electron

25
Q

This circuit has a 24-volt battery and the resistor is 8 ohms BLANK amps are running through the circuit

A

3 amps

26
Q

Choose all of the examples where there would be an increase in the electric or magnetic force

A

Increase the amount of charge on the object

Decrease the distance between the objects

Increase the mass of the object

27
Q

A neutral atom loses an electron. What type of charge does it have now?

A

Positive

28
Q

What type of force occurs between like charges?

A

Repulsion

29
Q

After being rubbed on a sweater, a balloon has a higher number of electrons than protons on a surface. What type of charge does the balloon have?

A

A negative charge

30
Q

What is an electron?

A

A subatomic particles with a negative charge

31
Q

What is electric potential energy?

A

Energy stored due to the position of charged particles

32
Q

The repulsion or attraction between two charged bodies. Opposites attract, like repel.

A

Electric Force

33
Q

What happens to the resistance of a conductor if its tempature increases?

A

Resistance increases

34
Q

The relationship between voltage, current, and resistance is called BLANK law

A

Ohm’s Law

35
Q

Static electricity is the buildup of electric charges on the surface objects, primarily caused by?

A

Friction

36
Q

Protons have a BLANK charge and electrons have a BLANK charge

A

Positive and Negative Charge

37
Q

What Is the formula for calculating electrical power?

A

P=I*V

38
Q

Ohm’s Law is represented by the formula V=R*I. What does R stand for?

A

Resistance

39
Q

What is electric current defined as?

A

The flow of electrons from a region of high electron concentration to a region of low electron concentration

40
Q

If you increase the voltage across a resistor, what will happen to the current?

A

Current will increase

41
Q

What is the voltage of a circuit that has the resistance of 5 ohms and a current of 2 A

A

10 volts

42
Q

The static electricity that is able to be seen in the sky?

A

Lightning Bolt

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