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Questions and Answers
Electric current is the flow of electric charges in a conductor.
True
Electric current is measured in volts.
False
In a parallel circuit, the total current is the sum of the currents through each branch.
True
Direct current (DC) flows in one direction, while alternating current (AC) changes direction periodically.
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The resistance of a conductor increases with an increase in temperature.
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Study Notes
Electric Current Fundamentals
- Electric current is the movement of electric charges within a conductor.
- Current is primarily measured in amperes, not volts; volts measure electric potential.
Circuit Types
- In a parallel circuit, the total current is equal to the sum of the currents flowing through all branches, allowing for multiple paths for the current to flow.
Types of Current
- Direct Current (DC) flows consistently in one direction, commonly used in batteries.
- Alternating Current (AC) alternates its direction periodically, commonly used in household electricity.
Resistance and Temperature
- The resistance of a conductor increases as its temperature rises, impacting current flow and efficiency.
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Description
Explore the fundamental concepts of electric current, including its definition, measurement, and behavior in different types of circuits. Understand the differences between direct and alternating current, and learn how resistance is affected by temperature.
