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Questions and Answers
What is the primary function of electromotive force in an electric circuit?
What is the primary function of electromotive force in an electric circuit?
- To transfer energy to an electric circuit per unit of electric charge (correct)
- To reduce the resistance of a wire
- To increase the electric field in a wire
- To oppose the flow of electric charge
What is the minimum number of components required to create a complete circuit with a steady current?
What is the minimum number of components required to create a complete circuit with a steady current?
- One resistor
- One electromotive force source (correct)
- Two electromotive force sources and a resistor
- One wire
A wire has a resistance of 0.0290 Ω. If the diameter of the wire is 2.05 mm, what material is the wire most likely made of?
A wire has a resistance of 0.0290 Ω. If the diameter of the wire is 2.05 mm, what material is the wire most likely made of?
- Aluminum
- Silver
- Copper (correct)
- Gold
If the current through a wire is 17.6 A, and the wire is 2.50 m in length and 0.654 mm in radius, what can be calculated?
If the current through a wire is 17.6 A, and the wire is 2.50 m in length and 0.654 mm in radius, what can be calculated?
A gold wire has a diameter of 0.84 mm. If the electric field in the wire is known, what can be calculated?
A gold wire has a diameter of 0.84 mm. If the electric field in the wire is known, what can be calculated?
If the resistance of a 24.0-m length of copper wire is known, what can be calculated?
If the resistance of a 24.0-m length of copper wire is known, what can be calculated?
What is the primary function of devices such as batteries and generators?
What is the primary function of devices such as batteries and generators?
What is the difference between electromotive force and potential difference?
What is the difference between electromotive force and potential difference?
What is the symbol used to represent electromotive force?
What is the symbol used to represent electromotive force?
What happens to the terminal voltage of a battery when current flows through it?
What happens to the terminal voltage of a battery when current flows through it?
What is the internal resistance of a battery due to?
What is the internal resistance of a battery due to?
What is the internal resistance of a generator due to?
What is the internal resistance of a generator due to?
What is the main advantage of electric circuits?
What is the main advantage of electric circuits?
What is the unit of electric current?
What is the unit of electric current?
What is the direction of electric current defined as?
What is the direction of electric current defined as?
What is the mathematical formula for electric current?
What is the mathematical formula for electric current?
What is an electric current?
What is an electric current?
What are the charge carriers in a conductor?
What are the charge carriers in a conductor?
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