quiz

Electric Charge

1. What is the smallest unit of electric charge?

  • A) Milliampere (mA)
  • B) Coulomb (C)
  • C) Elementary charge (e)
  • D) Ampere (A)
C) Elementary charge (e) Explanation

2. The conservation of charge principle states that an isolated system’s net charge is:

  • A) Increases over time
  • B) Decreases over time
  • C) Remains constant
  • D) Negative only
C) Remains constant Explanation

3. If a rubber balloon is rubbed against hair, what type of charge does the balloon acquire?

  • A) Positive charge
  • B) Negative charge
  • C) Neutral charge
  • D) It acquires no charge
B) Negative charge Explanation

4. What type of particles carry a charge smaller than the elementary charge?

  • A) Electrons
  • B) Protons
  • C) Quarks
  • D) Neutrons
C) Quarks Explanation

5. Approximately how many electrons are needed to make up one Coulomb of charge?

  • A) 1.6×1019
  • B) 6.24×1018
  • C) 1.0×106
  • D) 3.0×108
B) 6.24×1018 Explanation

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