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Science · Grades 8–12

Charge transferred

This relation uses constant current in amperes and time in seconds.

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The key idea

This relation uses constant current in amperes and time in seconds.

Q = It

Worked examples

A constant current of 6 A flows for 88 s. How much charge passes in C?

6 × 88 = 528

528 C

A constant current of 8 A flows for 84 s. How much charge passes in C?

8 × 84 = 672

672 C

Try it yourself

  1. A constant current of 12 A flows for 63 s. How much charge passes in C?

  2. A constant current of 2 A flows for 68 s. How much charge passes in C?

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Answers and marking notes
  1. 756 C

    12 × 63 = 756

  2. 136 C

    2 × 68 = 136

Further reading and review references

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