ELECTRICITY STUDY GUIDE

Multiple Choice

Which is the Source?

• Battery

• Wire

• Light Bulb

• Switch

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What is an Insulator?

• a material that easily allows electricity to flow through it 

• a material that does not allow electricity to flow easily 

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What is a Conductor?

• a material that easily allows electricity to flow through it 

• a material that does not allow electricity to flow easily 

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The rate of electron flow in a circuit

• Voltage

• Resistance

• Current

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Energy used or gained across two points in a circuit

• Current

• Voltage

• Resistance

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Opposition to the flow of electrons

• Current

• Voltage

• Resistance

Multiple Choice

Unit is Ohms $$\Omega$$  

• Current

• Resistance

• Voltage

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Unit is Amps (A)

• Current

• Voltage

• Resistance

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Unit is Volts (V)

• Current

• Voltage

• Resistance

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Splits down different paths in parallel circuits

• Current

• Resistance

• Voltage

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Stays the same no matter where you measure it in series circuits

• Current

• Resistance

• Voltage

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Increases as you add more bulbs to a series circuit

• Resistance

• Current

• Voltage

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Decreases as you add more pathways in a parallel circuit

• Resistance

• Voltage

• Current

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Is shared when you add two or more bulbs in series

• Voltage

• Current

• Resistance

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What types of charges attract?

• Positive and Positive

• Positive and Neutral

• Negative and Neutral

• Positive and Negative

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What charge does a proton have?

• negative (-)

• positive (+)

• neutral or no charge (0)

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What charge does an electron have?

• negative (-)

• positive (+)

• neutral or no charge (0)

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If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?

• A positive charge.

• A negative charge.

• A neutral charge

• No charge at all

Multiple Choice

Which of the following is caused by static electricity?

• a stove getting hot when it is turned on

• a magnet being attracted to a refrigerator

• a lightning strike during a storm

• a light bulb coming on when a switch is turned on

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An object becomes postiively charged when which of the following occurs?

• loses electrons

• gains electrons

• loses protons

• gains neutrons

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The difference between attraction and repulsion is that to attract is to pull something closer and repel is to push something away.

• True

• False

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What electricity component is this?

• cell or battery

• switch

• wires

• bulb

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What is the use of the batteries in this circuit?

• connected all component

• turn on or off electricity

• supply electricity

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Why is electrical wiring usually made from copper?

• Because copper is shiny

• Because copper conducts electricity

• Because copper is not magnetic

• Because copper insulate electricity

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What is a circuit with several paths for electricity to flow?

• conductor

• series circuit

• parallel circuit

• open circuit

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What is a circuit that only has ONE path for electricity to flow?

• series circuit

• closed circuit

• parallel circuit

• light bulb

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What is the unit of measure for current?

• ampere

• current

• voltage

• ohms

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What unit of measure is for resistance?

• ohms

• ampere

• voltage

• watts

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What moves when we say that there is current?

• inductors

• conductors

• electrons

• atoms

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If there is a current of 2A and a resistance of 24 ohms, what voltage will there be?

• 26 V

• 48 V

• 12 V

• 22 V

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What size resistor would produce a 3 Amp current flow with a 12 Volt battery

• 1 Ohm

• 3 Ohms

• 4 Ohms

• 12 Ohms

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What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?

• 25 V

• 10 V

• 2.5 V

• 0.4 V

Multiple Choice

If the voltage is increased and the resistance stays the same, what will current do?

• Increase

• Decrease

• Stay the same

• X

Multiple Choice

An alarm clock draws 0.5 A of current when connected to a 120 volt circuit. Calculate its resistance.

• 60Ω

• 120Ω

• 180Ω

• 240Ω

Multiple Choice

A circuit contains a 1.5 volt battery and a lamp with a resistance of 3 ohms. Calculate the current.

• 0.5A

• 1A

• 1.5A

• 2A

Multiple Choice

Which two particles are attracted to each other?

• Two neutrons

• A proton and an electron

• Two protons

• An electron and a neutron

Multiple Choice

A repulsive force exists between which two particles?

• Two neutrons

• An electron and a neutron

• An electron and a proton

• Two protons

Multiple Choice

A balloon is rubbed on a student's head. What occurs because of this?

• Charged particles on the balloon are destroyed

• Positively charged particles move from head to balloon

• Charged particles from the balloon are released into the air

• Negatively charged particles move from head to balloon

Multiple Choice

Which is the value of the constant in Coulomb's equation?

• k = 9·10^-9

• k = 9.8

• k = 6.67·10^-11

• k = 9 ·10⁹

Multiple Choice

In a good insulator, electrons are usually

• free to move around

• free to move around after an impurity has been added

• semi-free to move around

• tightly bound in place

Multiple Choice

What variable is a Coulomb the unit for?

• Charge

• Force

• Distance

• Mass

Multiple Choice

A repulsive force exists between which two particles?

• Two neutrons

• An electron and a neutron

• An electron and a proton

• Two protons