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Questions and Answers
What is the relationship between conductivity and resistivity in a material?
What is the relationship between conductivity and resistivity in a material?
- Conductivity is the reciprocal of resistivity. (correct)
- Conductivity is the square of resistivity.
- Conductivity is equal to resistivity.
- Conductivity is independent of resistivity.
If 5 Coulombs of charge pass through a point in a wire in 2 seconds, what is the current in Amperes?
If 5 Coulombs of charge pass through a point in a wire in 2 seconds, what is the current in Amperes?
- 0.4 A
- 2.5 A (correct)
- 7 A
- 10 A
How is the direction of electric current conventionally defined?
How is the direction of electric current conventionally defined?
- The direction of electron flow.
- The direction of positive charge flow. (correct)
- The direction of magnetic field lines.
- The direction of neutron flow.
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