Electrical Components and Their Characteristics Quiz
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5 questions, one answer each
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1. An ammeter is always connected in:
- A. Series
- B. Parallel
- C. Neither
- D. Both series and parallel
2. As a filament lamp heats up, its resistance:
- A. Decreases
- B. Stays the same
- C. Increases
- D. Becomes zero
3. Which component allows current to flow in one direction only?
- A. Thermistor
- B. LDR
- C. Diode
- D. Ohmic resistor
4. An LDR is used in an automatic street light. As it gets dark, its resistance:
- A. Increases, switching the light on
- B. Decreases, switching the light on
- C. Stays constant
- D. Becomes infinite
5. Which I-V graph feature identifies an ohmic conductor at constant temperature?
- A. A curve that steepens with current
- B. A straight line through the origin
- C. A line that only exists for negative current
- D. A vertical line