Question In real life circuits, wires have resistance and all batteries have an internal resistance. The internal resistance of a battery is given as a resistance configured so that the entire current being delivered goes through that resistor. In a typical car battery, the voltage is 12.9 V, and the internal resistance is 0.005 12. The wires to the starter from the battery have a total resistance of 0.006 12. When starting a car, the current delivered to the starter is 160 A. What fraction(as a percentage of total power) of the power is lost to resistances? 3
JUZPA7 The Asker · Physics
Transcribed Image Text: In real life circuits, wires have resistance and all batteries have an internal resistance. The internal resistance of a battery is given as a resistance configured so that the entire current being delivered goes through that resistor. In a typical car battery, the voltage is 12.9 V, and the internal resistance is 0.005 12. The wires to the starter from the battery have a total resistance of 0.006 12. When starting a car, the current delivered to the starter is 160 A. What fraction(as a percentage of total power) of the power is lost to resistances? 3
More Transcribed Image Text: In real life circuits, wires have resistance and all batteries have an internal resistance. The internal resistance of a battery is given as a resistance configured so that the entire current being delivered goes through that resistor. In a typical car battery, the voltage is 12.9 V, and the internal resistance is 0.005 12. The wires to the starter from the battery have a total resistance of 0.006 12. When starting a car, the current delivered to the starter is 160 A. What fraction(as a percentage of total power) of the power is lost to resistances? 3
Community Answer
RN6ZLR
Fraction of power lost in resistor equals to                     Power lost in resistor= bar(" Total power delivered by battery ")                      =(I^(2)(r_(1)+r_(2)))/(VI)       &# ... See the full answer