A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 V for a very short time, usually about 2.0 ms. (a) What power does the defibrillator deliver to the body, and (b) how much energy is transferred?

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A: Given: C1 = 3 μF C2 = 3 μF R = 150 ohm V= 50 V

Q: 92 2452 3052

A: Power = I2 R Current I = V/R

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A: Given data:  Two resistors are connected in parallel combination RT = 1403 Ω and R1 = 2000 Ω…

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Q: You are given a 49.5 V battery and two resistors of resistances 26 Ω and 94 Ω.? a)Find the current…

A: GivenV=49.5 VR1 =26 ΩR2 =94 Ω

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Q: CB Vcase=? www /=? 5 mA (a) What is the voltage (in V) on the case if 5.00 mA flows through the…

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Q: Consider the circuit shown below. We have a 2.0V battery, R1 = 1.0 Ω, R2 = 2.0 Ω, and R3 = 1.0 Ω. i.…

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Q: The image shows a circuit diagram that includes a battery with an emf of 10.0 V, some resistors, and…

A: (a) To calculate Req Req=35.0 + (42*7/(42+7)) + 14 = 55 ohm

Q: 12.0V 750 33 0 540 150 99 0 ***The voltage is 12.0 V. Ohms. A. The equivalent resistance of the…

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Q: What is the average speed of an object dropped from rest during the first 10 seconds of it's fall?

A: Given:Initial velocity of the object = 0 m/sAcceleration of an object falling freely = g = 9.8 m/s2

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A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

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A: Given:Initially uncharged capacitorCapacitance, C=4.71×10-6 FSeries resistor, R=8990 ΩSource V=1.50…

Q: In the adjacent circuit, the voltages and values of resistance are unknown. The value of the current…

A: Given , the current in R1 (I1)= 5.3 mA    The current in R3 (I3) = 1.8 mA Now you can calculate the…

Q: When a car's starter is in use, it draws a large current. The car's lights draw much less current.…

A: Case 1) current through the battery (I) = 64.8 A Potential difference across the battery terminals…

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.