Practice LED Streetlight Design - 7.2 | Electricity & Circuits | IB IMYP Grade 8 Physics
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the power consumption of an LED street lamp if it consumes 50 W?

πŸ’‘ Hint: Read the wattage specified.

Question 2

Easy

How do you calculate current (I) from power (P) and voltage (V)?

πŸ’‘ Hint: Remember the relationship between voltage, power, and current.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the power consumption of an LED streetlight?

  • 150 W
  • 50 W
  • 100 W

πŸ’‘ Hint: Focus on the energy-efficient designs of LEDs.

Question 2

True or False: LEDs use more power than traditional HPS lamps.

  • True
  • False

πŸ’‘ Hint: Consider the definitions of each lamp type.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If an LED streetlight consumes 50W and runs for 10 hours daily, calculate the yearly energy savings compared to a 150 W HPS lamp.

πŸ’‘ Hint: Calculate daily consumption first and then summarize for the year.

Question 2

Discuss the broader implications of replacing street lighting with LEDs on urban energy policies.

πŸ’‘ Hint: Think about environmental and economic impacts.

Challenge and get performance evaluation