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1Work and power of current. Joule-Lenz's law.docx
(f) Formative assessment questions
1. Calculate the electrical energy produced in 5 minutes when a current of 2 A is sent through a conductor by a potential difference of 500 volts.
[1]
2. A current of 5 ampere is passed through a conductor of 12 ohms for 2 minutes. Calculate the amount of heat produced. [1]
3. What is heating effect of current? List two electrical appliances which work on this effect.
[2]
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