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Questions and Answers
What is the SI unit of electric power?
What is the SI unit of electric power?
- Volt
- Ohm
- Watt (correct)
- Ampere
In a series combination of resistors, how does the total resistance compare to the individual resistances?
In a series combination of resistors, how does the total resistance compare to the individual resistances?
- It is unrelated to the individual resistances
- It is equal to the sum of the individual resistances (correct)
- It is always greater than the largest individual resistance
- It is always less than the smallest individual resistance
What is the relationship between current passing through a conductor and its resistance, according to Ohm's law?
What is the relationship between current passing through a conductor and its resistance, according to Ohm's law?
- No relationship
- Exponential relationship
- Inversely proportional
- Directly proportional (correct)
What is the role of a prism in the dispersion of light?
What is the role of a prism in the dispersion of light?
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How does alternating current (AC) differ from direct current (DC)?
How does alternating current (AC) differ from direct current (DC)?
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What do magnetic field lines represent around a current-carrying conductor?
What do magnetic field lines represent around a current-carrying conductor?
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How does a convex lens form an image compared to a concave lens?
How does a convex lens form an image compared to a concave lens?
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Why is AC preferred over DC for long-distance power transmission?
Why is AC preferred over DC for long-distance power transmission?
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