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Questions and Answers
What is the unit of measurement for electric current in the International System of Units (SI)?
What is the unit of measurement for electric current in the International System of Units (SI)?
- Ampere (A) (correct)
- Ohm (Ω)
- Watt (W)
- Volt (V)
What is the conventional symbol for electric current?
What is the conventional symbol for electric current?
- C
- V
- I (correct)
- E
In which type of electrical conductor are the charge carriers often electrons moving through a wire?
In which type of electrical conductor are the charge carriers often electrons moving through a wire?
- Insulator
- Semiconductor (correct)
- Plasma
- Electrolyte
What do electric currents create that are used in motors, generators, and transformers?
What do electric currents create that are used in motors, generators, and transformers?
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Which device is used to measure electric current?
Which device is used to measure electric current?
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Study Notes
Electric Current Measurement and Symbols
- Electric current is measured in amperes (A) in the International System of Units (SI).
- The conventional symbol for electric current is "I".
Charge Carriers and Conductivity
- In metallic conductors, the charge carriers are predominantly electrons that flow through the wire.
Electric Current Applications
- Electric currents generate magnetic fields, which are essential for the operation of motors, generators, and transformers.
Measurement of Electric Current
- An ammeter is the device used to measure electric current.
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