What is the emf of a battery with a 0.15-Ω internal resistance if the battery delivers 1.5 A to an externally connected 5.0-Ω resistor?
Answer to relevant QuestionsSome states allow the use of aluminum wire in houses in place of copper. (a) If you wanted the resistance of your aluminum wire to be the same as that of copper (assuming the same lengths), would the aluminum wire have to ...Two copper wires have equal cross-sectional areas and lengths of 2.0 m and 0.50 m, respectively. (a) What is the ratio of the current in the shorter wire to that in the longer one if they are connected to the same power ...Two 6.0-V batteries and one 12-V battery are connected in series. (a) What is the voltage across the whole arrangement? (b) What arrangement of these three batteries would give a total voltage of 12 V? The current in a refrigerator with a resistance of 12 Ω is 13 A (when the refrigerator is on). What is the power delivered to the refrigerator? (a) What is the resistance of an immersion-type heating coil if it is to generate 15 kJ of heat per minute when it is connected to a 120-V source? (b) What would the coil’s resistance have to be if instead 10 kJ of heat ...
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