Conservation of Electric Charge - AP Physics C: Electricity and Magnetism
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Find the charge when a 2 A current flows for 8 seconds.
Find the charge when a 2 A current flows for 8 seconds.
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16 C. Using $q = It$: $q = 2 \times 8 = 16$ C.
16 C. Using $q = It$: $q = 2 \times 8 = 16$ C.
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Identify the charge of a body when grounded.
Identify the charge of a body when grounded.
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Neutral. Earth connection neutralizes excess charge.
Neutral. Earth connection neutralizes excess charge.
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Which law states that like charges repel and opposite charges attract?
Which law states that like charges repel and opposite charges attract?
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Coulomb's Law. Force law governing charged particle interactions.
Coulomb's Law. Force law governing charged particle interactions.
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Identify the charge on a body losing electrons during contact charging.
Identify the charge on a body losing electrons during contact charging.
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Positive. Contact transfers electrons away from body.
Positive. Contact transfers electrons away from body.
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Calculate the charge transferred by a 4 A current in 3 seconds.
Calculate the charge transferred by a 4 A current in 3 seconds.
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12 C. Using $q = It$: $q = 4 \times 3 = 12$ C.
12 C. Using $q = It$: $q = 4 \times 3 = 12$ C.
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What is the charge of an atom with 6 protons and 7 electrons?
What is the charge of an atom with 6 protons and 7 electrons?
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Negative. More electrons than protons creates negative charge.
Negative. More electrons than protons creates negative charge.
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What is the charge state of an object after gaining 5 electrons?
What is the charge state of an object after gaining 5 electrons?
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Negative. Gaining electrons creates negative charge.
Negative. Gaining electrons creates negative charge.
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Identify the charge on a body losing electrons during contact charging.
Identify the charge on a body losing electrons during contact charging.
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Positive. Contact transfers electrons away from body.
Positive. Contact transfers electrons away from body.
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Identify the charge on an atom with an equal number of protons and electrons.
Identify the charge on an atom with an equal number of protons and electrons.
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Neutral. Equal numbers of positive and negative charges cancel.
Neutral. Equal numbers of positive and negative charges cancel.
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Identify the charge of a body when grounded.
Identify the charge of a body when grounded.
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Neutral. Earth connection neutralizes excess charge.
Neutral. Earth connection neutralizes excess charge.
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What happens to the total charge when two objects are charged by friction?
What happens to the total charge when two objects are charged by friction?
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Total charge is conserved. Equal and opposite charges are created simultaneously.
Total charge is conserved. Equal and opposite charges are created simultaneously.
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Identify the charge of an object gaining electrons through induction.
Identify the charge of an object gaining electrons through induction.
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Negative. Induction attracts electrons to the object.
Negative. Induction attracts electrons to the object.
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What is the charge of a molecule with 5 protons and 4 electrons?
What is the charge of a molecule with 5 protons and 4 electrons?
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Positive. More protons than electrons creates positive ion.
Positive. More protons than electrons creates positive ion.
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Determine the charge of a system initially neutral after losing 2 electrons.
Determine the charge of a system initially neutral after losing 2 electrons.
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Positive. Losing electrons creates positive charge.
Positive. Losing electrons creates positive charge.
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What is the net charge of an atom with 3 protons and 3 electrons?
What is the net charge of an atom with 3 protons and 3 electrons?
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Neutral. Equal protons and electrons balance charge.
Neutral. Equal protons and electrons balance charge.
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Which process involves charging without direct contact?
Which process involves charging without direct contact?
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Induction. Charge redistribution without physical contact.
Induction. Charge redistribution without physical contact.
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Which law states that like charges repel and opposite charges attract?
Which law states that like charges repel and opposite charges attract?
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Coulomb's Law. Force law governing charged particle interactions.
Coulomb's Law. Force law governing charged particle interactions.
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Find the total charge if $q_1 = 3C$ and $q_2 = -3C$ are combined.
Find the total charge if $q_1 = 3C$ and $q_2 = -3C$ are combined.
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0 C. Equal and opposite charges cancel completely.
0 C. Equal and opposite charges cancel completely.
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Calculate the charge transferred by a 2 A current in 5 seconds.
Calculate the charge transferred by a 2 A current in 5 seconds.
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10 C. Using $q = It$: $q = 2 \times 5 = 10$ C.
10 C. Using $q = It$: $q = 2 \times 5 = 10$ C.
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Identify the charge on an object after losing 3 electrons.
Identify the charge on an object after losing 3 electrons.
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Positive. Losing electrons leaves positive charge.
Positive. Losing electrons leaves positive charge.
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Identify the charge state of an object with an excess of 10 electrons.
Identify the charge state of an object with an excess of 10 electrons.
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Negative. Extra electrons create negative charge.
Negative. Extra electrons create negative charge.
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Find the total charge if $q_1 = 2C$ and $q_2 = -2C$ are combined.
Find the total charge if $q_1 = 2C$ and $q_2 = -2C$ are combined.
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0 C. Equal and opposite charges sum to zero.
0 C. Equal and opposite charges sum to zero.
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What is the role of a grounding wire in charging by induction?
What is the role of a grounding wire in charging by induction?
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Provides a path for charge flow. Allows charge to escape to ground.
Provides a path for charge flow. Allows charge to escape to ground.
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Calculate the total charge for 0.5 A current flowing for 10 seconds.
Calculate the total charge for 0.5 A current flowing for 10 seconds.
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5 C. Using $q = It$: $q = 0.5 \times 10 = 5$ C.
5 C. Using $q = It$: $q = 0.5 \times 10 = 5$ C.
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What is the charge of an ion with 9 protons and 8 electrons?
What is the charge of an ion with 9 protons and 8 electrons?
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Positive. One more proton than electron creates positive charge.
Positive. One more proton than electron creates positive charge.
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Find the charge when a 1.5 A current flows for 4 seconds.
Find the charge when a 1.5 A current flows for 4 seconds.
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6 C. Using $q = It$: $q = 1.5 \times 4 = 6$ C.
6 C. Using $q = It$: $q = 1.5 \times 4 = 6$ C.
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Calculate the total charge transferred by a 3 A current for 2 seconds.
Calculate the total charge transferred by a 3 A current for 2 seconds.
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6 C. Using $q = It$: $q = 3 \times 2 = 6$ C.
6 C. Using $q = It$: $q = 3 \times 2 = 6$ C.
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Identify the result of charging by friction between a rubber rod and fur.
Identify the result of charging by friction between a rubber rod and fur.
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Rubber rod becomes negative. Rubber attracts electrons from fur.
Rubber rod becomes negative. Rubber attracts electrons from fur.
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What is the formula for electric charge ($q$) in terms of current ($I$) and time ($t$)?
What is the formula for electric charge ($q$) in terms of current ($I$) and time ($t$)?
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$q = I \times t$. Charge equals current multiplied by time.
$q = I \times t$. Charge equals current multiplied by time.
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What is the net charge of a system with $+5C$ and $-5C$ charges?
What is the net charge of a system with $+5C$ and $-5C$ charges?
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0 C. Equal magnitude charges cancel to zero.
0 C. Equal magnitude charges cancel to zero.
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