Basic Electrical and Lighting
Created on 19th February 2025
Grade level: Grade 10th grade
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19 Questions
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Questions (19)
1. What unit is used to measure electric current?
Amperes
4 choice options
2. Which of the following is a type of current that flows in one direction?
DC
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3. What does LED stand for?
Light Emitting Diode
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4. What is the voltage of a standard LED?
3V
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5. Which of the following is used to protect electrical circuits from surges?
SPD
4 choice options
6. What is the primary function of a resistor in an electrical circuit?
Limit current
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7. Which type of current alternates direction?
AC
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8. What is the term for the amount of electrical energy consumed in one hour?
Watt-hour
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9. Which of the following devices converts electrical energy into light?
LED
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10. What is the formula for calculating electrical power?
Voltage x Current
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11. Which device can be used to measure voltage in a circuit?
Voltmeter
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12. What does the term 'watt' measure?
Power
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13. What is the purpose of a fuse in an electrical circuit?
Protect against overload
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14. Which of the following describes the term SPD?
Surge Protective Device
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15. What is the function of a transformer in an AC circuit?
To increase or decrease voltage
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16. How does an LED differ from a traditional incandescent bulb?
LEDs have a longer lifespan
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17. What is a primary characteristic of DC voltage?
It is constant
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18. Which electrical component is used to store energy?
Capacitor
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19. What is the relationship between voltage, current, and resistance as described by Ohm's Law?
V = I x R
4 choice options