A car battery has a terminal potential difference of 13.6 V when there is no load. When the starter motor draws 75 A, the terminal potential difference drops to 10 V. What is the internal resistance of the battery?
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- A heart defibrillator being used on a patient has an RC time constant of 21.0 ms due to the resistance of the patient and the capacitance of the defibrillator. If the defibrillator has an 9.00 µF capacitance, what is the resistance of the path through the patient? resistance: If the initial voltage is 12.0 kV, how long does it take to decline to 687 V? time: SA heart defibrillator being used on a patient has an RC time constant of 11 ms due to the resistance of the patient's body and the capacitance of the defibrillator. t = 11 ms C = 8.5 uF V = 14 kV (b) If the initial voltage is 14 kV, how long does it take to decline to 6.00 x 10^2 V in ms?The potential difference across a resting neuron in the human body is about 75.0 mV and carries a current of about 0.200 mA. How much power does the neuron release? How many electrons will flow in a resting neuron?
- A battery has a terminal voltage of 13.5 V when no current flows. Its internal resistance is 2.00 Ω. A 3.30-Ω resistor is connected across the battery terminals. What is the current through the 3.30-Ω resistor?An idealized voltmeter is connected across the terminals of a 15.5 V battery, and a 71.0 Ω appliance is also connected across its terminals. If the voltmeter reads 10.6 V. How much power is being dissipated by the appliance? What is the internal resistance of the battery?Need help with Q 18.
- A capacitor of 10.0 uF and a resistor of 130 OMEGA are quickly connected in series to a battery of 4.00 V. What is the charge Q on the capacitor 0.00100 s after theconnection is made?A battery has an emf of 15.0 V. The terminal voltage of the battery is 11.0 V when it is delivering 22.0 W of power to an external load resistor R. (a) What is the value of R? Ω (b) What is the internal resistance of the battery? ΩA battery has an emf of 15.0 V. The terminal voltage of the battery is 10.6 V when it is delivering 22.0 W of power to an external load resistor R. (a) What is the value of R? Ω (b) What is the internal resistance of the battery? Ω
- A battery has an emf of 15.0 V. The terminal voltage of the battery is 10.8 V when it is delivering 26.0 W of power to an external load resistor R. (a) What is the value of R? (b) What is the internal resistance of the battery?What is the magnitude of the current passing through the 4 Ω resistance in Amps?A heart defibrillator being used on a patient has an RC time constant of 11.0 ms due to the resistance of the patient and the capacitance of the defibrillator. If the defibrillator has an 9.25 µF capacitance, what is the resistance of the path through the patient? resistance: Ω If the initial voltage is 12.0 kV, how long does it take to decline to 895 V? time: