Ampere: Definition & Calculation


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A copper voltameter uses a square cathode plate measuring 7 inches on each side. The current density is kept at 10 amperes per foot. What current is required to deposit copper fully on both sides of the cathode at the specified current density?

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1. What is the apparatus used to measure electric charge and standardize the ampere unit?

2. On what is the calculation of the number of amperes based?

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About This Quiz & Worksheet

The ampere is a critical component of measuring electric current. This quiz will assess your knowledge of amperes, as well as how to calculate them.

Quiz & Worksheet Goals

This quiz's goal is to test how well you understand:

  • How to calculate amperes
  • Devices that measure amperes
  • Units used to measure electric current
  • The basis for the calculation of ampere number
  • The abbreviation of the ampere unit

Skills Practiced

  • Reading comprehension - draw the most important information from the related lesson on amperes
  • Problem solving - use the knowledge you've gained to calculate amperes
  • Defining key concepts - understand related terms such as current, voltameter and electrolysis
  • Information recall - access the knowledge you've acquired about amperes

Additional Learning

More information on amperes can be found in the quiz's accompany lesson, entitled Ampere: Definition, Calculation & Quiz. This lesson contains the following objectives:

  • Define current
  • Understand how current is measured
  • Define ampere
  • Know how amperes are measured
  • Calculate amperes