Practice Factors Affecting The Heating Effect (5.3) - Heating Effect of Electric Current

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9 questions

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6 sample questions

Question 1.
What happens to the heat production if the current is doubled?
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Remember the square relationship of current.
Question 2.
What do we call the opposition to current flow?
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It starts with an 'R'.
3Question 3.
What is the relationship between current and heat generation?
- Directly proportional
- Inversely proportional
- No relationship
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Remember 'More current = More heat.'
4Question 4.
True or False: Higher resistance always results in more efficient energy use.
- True
- False
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Think about energy loss.
Question 5.
If you have a heater designed to operate at 10 Amperes and 5 Ohms resistance for 30 minutes, calculate the total heat generated in Joules.
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Remember to convert time 30 minutes to seconds.
Question 6.
Discuss the potential hazards of using a conductor with very high resistance but low current in a heating element.
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Consider the design purpose of the heating element.

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