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Questions and Answers
What is the primary carrier of electric current in solids?
What is the primary carrier of electric current in solids?
What characterizes an insulator in terms of current flow?
What characterizes an insulator in terms of current flow?
How is electric current defined?
How is electric current defined?
What does the symbol 'I' represent in the context of electric current?
What does the symbol 'I' represent in the context of electric current?
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Which of the following statements about gases as current carriers is true?
Which of the following statements about gases as current carriers is true?
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Study Notes
Electric Current
- Electric current is the rate of flow of charge.
- Current carriers are the particles that carry the charge.
- In solids, they are free electrons.
- In liquids and gases they can be ions.
- Current is measured in Amperes (A).
- The rate of flow of charge through a cross-section of a conductor per unit time is electric current.
- The unit of electric current is ampere (A).
- 1 A = 1 Coulomb/second
- Current is the rate of flow of charge through a given cross-section area.
- Current is denoted by 'I'.
- The formula for calculating current is I = Q/t, where Q is the amount of charge that flows and t is the time taken.
- Electric current is a scalar quantity.
Types of Conductors/Insulators
- Conductors allow current to flow easily.
- Insulators resist current flow.
- Examples of conductors are metals (like copper and silver).
- Examples of insulators are rubber and glass.
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Description
Test your understanding of electric current and the types of conductors and insulators. This quiz covers the basics of electric charge flow, measurement units, and the properties of materials that affect current flow. Challenge yourself and see how well you grasp these fundamental concepts in electricity!
