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Questions and Answers
What is the SI unit for electric current?
What is the SI unit for electric current?
- Coulomb
- Volt
- Ampere (correct)
- Watt
In an electric circuit, what are the charge carriers often?
In an electric circuit, what are the charge carriers often?
- Protons
- Neutrons
- Electrons (correct)
- Photons
What type of particles are the charge carriers in semiconductors?
What type of particles are the charge carriers in semiconductors?
- Holes (correct)
- Electrons
- Neutrons
- Ions
What do electric currents create that is used in motors, generators, and transformers?
What do electric currents create that is used in motors, generators, and transformers?
What creates light in incandescent light bulbs due to electric currents?
What creates light in incandescent light bulbs due to electric currents?
What is the term for the device used to measure electric current?
What is the term for the device used to measure electric current?
Who originated the conventional symbol 'I' for current?
Who originated the conventional symbol 'I' for current?
In which country did the notation 'I' for current become standard?
In which country did the notation 'I' for current become standard?
What is the conventional direction of current known as?
What is the conventional direction of current known as?
In metals, what are the moving charged particles that constitute the electric current called?
In metals, what are the moving charged particles that constitute the electric current called?
What are the positively charged atomic nuclei of the atoms in metals?
What are the positively charged atomic nuclei of the atoms in metals?
In semiconductors, what can the charge carriers be?
In semiconductors, what can the charge carriers be?
What happens in an electrolyte in an electrochemical cell?
What happens in an electrolyte in an electrochemical cell?
Why is a convention needed for the direction of current?
Why is a convention needed for the direction of current?
Which direction do negatively charged carriers, such as electrons, flow in an electrical circuit?
Which direction do negatively charged carriers, such as electrons, flow in an electrical circuit?
Which of the following materials can have both electrons and holes as charge carriers?
Which of the following materials can have both electrons and holes as charge carriers?
What type of gas has ionized particles as charge carriers in electric currents?
What type of gas has ionized particles as charge carriers in electric currents?
In which type of circuit does the direction of current flow reverse at regular intervals?
In which type of circuit does the direction of current flow reverse at regular intervals?
What phenomenon do time-varying electric currents exhibit that is used in telecommunications?
What phenomenon do time-varying electric currents exhibit that is used in telecommunications?
Which unit is equivalent to one coulomb per second for expressing electric current in the SI system?
Which unit is equivalent to one coulomb per second for expressing electric current in the SI system?
What type of device is used to measure electric current?
What type of device is used to measure electric current?
According to the text, what did André-Marie Ampère use to formulate Ampère's force law in 1820?
According to the text, what did André-Marie Ampère use to formulate Ampère's force law in 1820?
What is the conventional symbol for current according to the text?
What is the conventional symbol for current according to the text?
In which year did at least one journal continue to use 'C' instead of 'I' for current?
In which year did at least one journal continue to use 'C' instead of 'I' for current?
What is the conventional direction of current arbitrarily defined as in the text?
What is the conventional direction of current arbitrarily defined as in the text?
In metals, what are the positively charged atomic nuclei of the atoms held in a fixed position?
In metals, what are the positively charged atomic nuclei of the atoms held in a fixed position?
What can the charge carriers in semiconductors be, according to the text?
What can the charge carriers in semiconductors be, according to the text?
When defining a variable I to represent the current, what must be specified according to the text?
When defining a variable I to represent the current, what must be specified according to the text?
What does a negative value for the current imply in an electrical circuit according to the text?
What does a negative value for the current imply in an electrical circuit according to the text?
'Ohm's law states.' What is missing from this sentence according to the text?
'Ohm's law states.' What is missing from this sentence according to the text?
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