A 200 μF defibrillator capacitor is charged to 1200 V. When fired through a pa- tient's chest, it loses 95% of its charge in 40 ms. What is the resistance of the patient's chest?

A resistor with an unknown resistance is connected in parallel to a 13 Ω resistor. Whenboth resistors are connected in parallel to anemf source of 20 V, the current through the unknown resistor is measured with an ammeter to be 4 A.What is the resistance of the unknown resistor?Answer in units of Ω.

www R2 R, www R3 V A 5-year old has nothing better to do than to connect three resistors to a voltage source as shown. The resistors are R1=49 2, R2=62 2, and R3=D16 2, respectively, and the voltage source has 1.5 Volts. What is the total resistance? Submit Answer Tries 0/2 What is the current through the voltage source?

A person notices a mild shock if the current along a path through the thumb and index finger exceeds 78 µA. Compare the maximum possible voltage without shock across the thumb and index finger with a dry-skin resistance of 3.0 ✕ 105  and a wet-skin resistance of 2000 . dry skin  V wet skin  V

Nerve impulses are carried along axons, the elongated fibers that transmit neural signals. We can model an axon as a tube with an inner diameter of 10 μm. The tube wall is insulated, but the fluid inside it has a resistivity of 0.50 Ω⋅m. What is the resistance of a 5.0-mm-long axon?

We have two rechargeable batteries available, their electromotive forces and their internal resistances are the following: U01 = 12.6 v, R1 =0.05 ohm, U02 = 12.2 V, R2 = 5 ohm. What will happen if the two rechargeable batteries are connected in parallel and the circuit is closed through a resistor of resistance R = 2 ohm?

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The circuit below contains two real batteries, each having significant internal resistance. Battery #1 has an EMF of 6.00 V and an internal resistance of 1.00 ohm. Battery #2 has an EMF of 12.00 V and an internal resistance of 2.00 ohms. These two batteries are connected in series with two resistors R, = 6.00 ohms and R,= 3.00 ohms. ri d (6.00,V) (1.00 0) R1 (6.00 N) R2 (3.00 N) a r2 E2 (2.00 Q) (12.00 V) 18. The current in the 12.00 Volt battery is equal to C. 0.500 A. A. 0.750 A. B. 1.00 A. D. 2.00 A. E. 1.50 A. 19. The potential difference across the terminals of battery #1 from point C to point d is equal to C. 7.00 V. A. 5.50 V. B. 6.00 V. D. 5.00 V. E. 6.50 V. 20. The potential difference across the terminals of battery #2 from point a to point b is equal to C. 13.00 V. A. 14.00 V. В. 10.00 V. D. 11.0 V. E. 12.00 V.

Q1 A 68 Q resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is Q2 If 2 resistors of 5kQ and 7kQ are connected in series across a 15V battery, then the current flowing through each of the resistance should be

The potential difference across the terminals of a battery is8.40 V when there is a current of 1.50 A in the battery from the negativeto the positive terminal. When the current is 3.50 A in the reverse direction,the potential difference becomes 10.20 V. What is the internal resistance of the battery?