Answer :
Final answer:
Electric potential is the electric potential energy per unit charge in an electric field, while potential difference is the variance in electric potential between two points, crucial in driving current in circuits. Basic electronic components such as resistors, coulombs, and voltmeters play significant roles in electrical circuits.
Explanation:
Electric potential: Electric potential, denoted by V, is the amount of electric potential energy that a unit charge has at a specific point in an electric field. It is measured in volts and represents the work done per unit charge to bring a test charge from infinity to that point.
Electric potential and potential difference: Electric potential is the potential energy per unit charge at a specific point, while potential difference is the difference in electric potential between two points in an electric field. Potential difference is what drives current in circuits.
Basic electronic components:
- Resistor: A resistor is used to limit the flow of current in a circuit. Its circuit symbol is a zigzag line (like: :::) and it dissipates energy in the form of heat.
- Coulomb: Coulomb is the SI unit of electric charge. It symbol is 'C' and it represents the charge flowing in one second past a given point when there is a constant current of one ampere.
- Voltmeter: A voltmeter is used to measure the potential difference across components in a circuit. Its circuit symbol is a 'V' with a plus and minus sign at the ends.
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