Electrical mathQuestion 627 of 1506

Which choice shows 2 400 000 written correctly in scientific notation?

  1. 24 x 10^6
  2. 2.4 x 10^5
  3. 2.4 x 10^6
  4. 2.4 x 10^7
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Correct answer: 2.4 x 10^6

The digits are written as a number between 1 and 10, and the zeros are carried by the power of ten: 2.4 x 1 000 000.

Source: Lessons in Electric Circuits I: DC (Kuphaldt), 4.1: Scientific Notation

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Questions last reviewed: 18 October 2026