Eight flashlight batteries in series have an emf of about 12 V, similar to that of a car battery. Could they be used to start a car with a dead battery? Why or why not?
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Eight flashlight batteries in series have an emf of about 12 V,
similar to that of a car battery. Could they be used to start a car with a
dead battery? Why or why not?
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- -5.00 Ω , R In the figure below, & = 3.00 V, & = 1.00 V, R1 R3 = 2.00 2, and both batteries are ideal. What is the rate at which energy is dissipated = 4.00 N, in (a) R1? (b) R2? (c) R3? What is the power of (d) battery 1? (e) battery 2? R2 R3 RIn the figure ℰ1 = 3.22 V, ℰ2 = 0.927 V, R1 = 3.89 Ω, R2 = 2.23 Ω, R3 = 3.65 Ω, and both batteries are ideal. What is the rate at which energy is dissipated in (a) R1, (b) R2, and (c) R3? What is the power of (d) battery 1 and (e) battery 2?Please answer
- When the switch is open, the potential difference across the terminals of a battery is 20 0.0V. When a current of 2.0A flows, the potential difference across the battery drop to 16V. If this battery consists of two identical cells in series, what is the electromotive force of each cell? 8.0V 10.0V 16.0V 20.0VYour flashlight is getting dimmer and dimmer, so you assume the batteries are nearly dead. They are “D” cells producing 1.5 volts. You take the batteries out and test them with a voltmeter. The meter reveals the batteries have nearly 1.5 volts of potential. Are the batteries dead or is something else going on? Discuss how you can tell whether the batteries are dead, and how you would test the flashlight to see whether there is some internal problem. Is it an either-or proposition? Explain.In the figure the ideal battery has emf = 31.7 V, and the resistances are R1 = R2 = 41 Ω, R3 = R4 = R5 = 8.2 Ω, R6 = 5.4 Ω, and R7 = 4.8 Ω. What are currents (a)i2, (b)i4, (c)i1, (d)i3, and (e)i5?
- A 60W lightbulb in your house is left on for 25 minutes while you do some of your Foundations of Physics homework. A quick google tells you that the mains voltage in Australia is 230V. How many electrons pass through the lightbulb in that time?A 5.5 A current is set up in a circuit for 6.2 min by a rechargeable battery with a 9.0 V emf. By how much is the chemical energy of the battery reduced?