Electrical Circuits Quiz
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5 questions, one answer each
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1. What is the equation linking current, charge and time?
- A. A. I = Q x t
- B. B. I = Q / t
- C. C. Q = I + t
- D. D. t = I / Q
2. Which component's resistance decreases as light intensity increases?
- A. A. Thermistor
- B. B. LDR
- C. C. Diode
- D. D. Filament lamp
3. A resistor at constant temperature has a straight-line I-V graph through the origin. What does this demonstrate?
- A. A. Ohm's Law
- B. B. The generator effect
- C. C. Conservation of charge
- D. D. Total internal reflection
4. In a series circuit of two lamps, if one lamp filament breaks, what happens to the other lamp?
- A. A. It gets brighter
- B. B. It stays the same
- C. C. It also goes out
- D. D. Its resistance decreases
5. Two identical resistors are connected first in series and then in parallel. How does the combined resistance compare?
- A. A. Series combined resistance is lower than parallel
- B. B. They are equal in both cases
- C. C. Parallel combined resistance is lower than series
- D. D. Parallel combined resistance is higher than series