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Which of the following statements is true about electric current?

easy MCQ 1 mark Class 7 · Science · Electric Current and its Effects
  1. Electric current is the flow of positive charges.
  2. Electric current is the flow of electrons in a conductor.
  3. Electric current is the rate at which resistance changes.
  4. Electric current is measured in joules per second.
Answer
Electric current is the flow of electrons in a conductor.

The correct answer is Electric current is the flow of electrons in a conductor. — Step 3: Match this definition with option B, which correctly states the flow of electrons.

Step-by-step solution

  1. Step 1: Recall that electric current is the quantity of charge passing a point per unit time.
  2. Step 2: Identify that electrons carry negative charge and move in a conductor.
  3. Step 3: Match this definition with option B, which correctly states the flow of electrons.
Common mistake: Confusing current with voltage or resistance.

Concept tested: Definition of electric current.

Published · How this solution was prepared and checked

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