11.7 - Heating Effect of Electric Current
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Practice Questions
Test your understanding with targeted questions
What does Joule's law state?
💡 Hint: Remember the formula H = I²Rt.
Name two appliances that utilize the heating effect of electric current.
💡 Hint: Think of appliances that generate heat to perform their function.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for calculating heat produced in a resistor?
💡 Hint: Remember that heat is involved with current and resistance.
True or False: Fuses are designed to allow the current to exceed safe limits.
💡 Hint: Think about the safety purpose of a fuse.
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Challenge Problems
Push your limits with advanced challenges
An electric iron has a resistance of 20 Ω and operates at 240 V. Calculate the power consumed.
💡 Hint: Use the power formula that relates voltage and resistance.
How much heat is produced when a 3 A current flows through a 6 Ω resistor for 15 seconds?
💡 Hint: Substitute the values into Joule’s law carefully.
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