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Questions and Answers
What is the unit of electric current?
What is the unit of electric current?
- Watt
- Ampere (correct)
- Volt
- Ohm
What is the direction of conventional current?
What is the direction of conventional current?
- Around the circuit
- From negative to positive terminal
- Through the battery
- From positive to negative terminal (correct)
What is the relationship between voltage and current in a conductor?
What is the relationship between voltage and current in a conductor?
- Voltage is inversely proportional to the square of current
- Voltage is directly proportional to the square of current
- Voltage is inversely proportional to current
- Voltage is directly proportional to current (correct)
What is the function of a resistor in an electric circuit?
What is the function of a resistor in an electric circuit?
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What is the term for the path through which electric current flows?
What is the term for the path through which electric current flows?
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Study Notes
Electric Current Fundamentals
- The unit of electric current is the ampere (A), which is defined as one coulomb per second.
- The direction of conventional current is from positive to negative, opposite to the flow of electrons.
Voltage and Current Relationships
- The relationship between voltage and current in a conductor is described by Ohm's Law, where current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R), I = V/R.
Resistors in Electric Circuits
- The function of a resistor in an electric circuit is to reduce the voltage and current in the circuit by converting some of the energy into heat.
Electric Circuit Pathways
- The term for the path through which electric current flows is a circuit.
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