Task 30200.
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- Physics
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- 30200.tif (46.05 KB)
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- 08.03.2014 15:44:17
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- Юрий Физик · about the seller and their products
DESCRIPTION
Task 30200.
Flashlight battery has emf E = 4.5 V and internal resistance r = 3,5 Ohm. How many of these batteries must be connected in series to feed the lamp rated for U = 127 V and power P = 60W?
Additional information:
Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.
If you have any questions to address, please. I´ll try to help.
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