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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the formula for calculating electric power?
💡 Hint: Think about the letters that represent power, voltage, and current.
Question 2
Easy
Express electrical energy in terms of power and time.
💡 Hint: Consider how energy is connected to time and power.
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 formula used to calculate electric power?
- A) P = V/R
- B) P = VI
- C) P = I²R
💡 Hint: Remember the basic components that make up power.
Question 2
True or False: Electric energy can be measured in kilowatt-hours.
- True
- False
💡 Hint: Think about how energy consumption is billed in households.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A device rated at 1500 W is used for five hours a day. Calculate the total energy consumption in kWh for a month.
💡 Hint: Remember to calculate daily energy consumption before multiplying by the number of days.
Question 2
In a circuit, a lamp consumes 60 W when the voltage is 120 V. What is the current flowing through the lamp?
💡 Hint: Use the power formula and remember to solve for current by rearranging the equation.
Challenge and get performance evaluation