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Questions and Answers
What is the direction of the electric field due to a positive charge?
What is the direction of the electric field due to a positive charge?
- Parallel to the charge
- Toward the charge
- Perpendicular to the charge
- Away from the charge (correct)
What is the SI unit of electric charge?
What is the SI unit of electric charge?
- Ampere
- Ohm
- Volt
- Coulomb (correct)
Which material allows electric charges to move freely?
Which material allows electric charges to move freely?
- Insulator
- Dielectric
- Conductor (correct)
- Semiconductor
What is the relationship between electric field strength and distance from a point charge?
What is the relationship between electric field strength and distance from a point charge?
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In which direction does an electron move in an electric field?
In which direction does an electron move in an electric field?
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What happens to the electric potential energy when two like charges are brought closer together?
What happens to the electric potential energy when two like charges are brought closer together?
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Study Notes
Electric Field and Charge
- The direction of the electric field due to a positive charge is radially outward from the charge.
- The SI unit of electric charge is the coulomb (C).
Conductors
- A conductor is a material that allows electric charges to move freely.
Electric Field Strength
- The electric field strength decreases with an increase in distance from a point charge, following the inverse square law.
Electron Movement
- An electron moves in the opposite direction of the electric field, i.e., it moves from a region of higher potential to a region of lower potential.
Electric Potential Energy
- When two like charges are brought closer together, their electric potential energy increases.
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