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AP Physics C: E&M Physics — practice by topic

Browse 30 questions across 4 Physics topics. Choose what you want to revise, then open a question to check its answer and worked solution.

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Physics topics

Electric Charges and Fields (30)Electricity (30)Electrostatics (30)Physics (30)

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A physicist records a charge measurement in SI units, named after a French physicist. That unit is the:Read the answer and worked solution →Experiments established that charge comes in how many types?Read the answer and worked solution →If a charge vanished in one place and appeared far away, one law would still hold. That law is the conservation of:Read the answer and worked solution →Charge cannot take just any value, but comes in whole multiples of a basic amount. Charge is therefore said to be:Read the answer and worked solution →

Worked practice questions

A physicist records a charge measurement in SI units, named after a French physicist. That unit is the:

  1. Coulomb
  2. Kelvin
  3. Newton
  4. Hertz
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Correct answer: A. Coulomb

1. Charge is the quantity. 2. The name honours Charles-Augustin de Coulomb. 3. It is the coulomb. _Source: OpenStax University Physics Volume 2, Chapter 5, Electric Charges and Fields._

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Experiments established that charge comes in how many types?

  1. One type
  2. Two types
  3. Four types
  4. Eight types
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Correct answer: B. Two types

1. Positive and negative behave differently. 2. Other properties were found besides. 3. There are two types. _Source: OpenStax University Physics Volume 2, Chapter 5, Electric Charges and Fields._

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If a charge vanished in one place and appeared far away, one law would still hold. That law is the conservation of:

  1. Charge
  2. Colour
  3. Momentum
  4. Volume
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Correct answer: A. Charge

1. Nothing is created or destroyed. 2. The total stays fixed. 3. It is conservation of charge. _Source: OpenStax University Physics Volume 2, Chapter 5, Electric Charges and Fields._

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