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Questions and Answers
What is the SI unit of electric current?
What is the SI unit of electric current?
- Volt
- Ampere (correct)
- Ohm
- Watt
What happens to the resistance in a wire when its length is doubled, keeping the area of cross-section constant?
What happens to the resistance in a wire when its length is doubled, keeping the area of cross-section constant?
- It doubles (correct)
- It quadruples
- It becomes half
- It remains the same
Which material has the highest electrical conductivity?
Which material has the highest electrical conductivity?
- Gold
- Silver (correct)
- Copper
- Aluminum
