7 - Real-World Numerical Applications
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Practice Questions
Test your understanding with targeted questions
Calculate the total current if 4 sockets draw 10 A each.
💡 Hint: Multiply the number of sockets by the current each one draws.
What is the voltage drop across a 10 m wire with a resistance of 0.0175 Ω/m carrying 5 A?
💡 Hint: Use the formula V = I × R.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the current drawn by a 150 W HPS lamp at 230 V?
💡 Hint: Think about how power and voltage are related.
True or False: Voltage drop is not a significant factor in household wiring.
💡 Hint: Consider how energy is lost over distances.
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Challenge Problems
Push your limits with advanced challenges
An apartment complex has 12 sockets, each drawing 10 A on a 240 V system. If only three sockets are used at a time, calculate the effective current load and discuss any safety implications.
💡 Hint: Consider the worst-case scenario of full usage.
Design a streetlight system utilizing both HPS and LEDs. Analyze the cost-effectiveness and energy savings in a scenario where 10 HPS are replaced with LEDs.
💡 Hint: Use energy consumption calculations for both lamp types.
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Reference links
Supplementary resources to enhance your learning experience.