An electric eel generates electric currents through its highly specialized Hunter’s organ, in which thousands of disk-shaped cells called electrocytes are lined up in series, very much in the same way batteries are lined up inside a flashlight. When activated, each electrocyte can maintain a potential difference of about 150 mV at a current of 1 A for about 2.0 ms. Suppose a grown electric eel has 4.0 × 103 electrocytes and can deliver up to 300 shocks in rapid series over about 1 s. (a) What maximum electrical power can an electric eel generate? (b) Approximately how much energy does it release in one shock? (c) How high would a mass of 1 kg have to be lifted so that its gravitational potential energy equals the energy released in 300 such shocks?

Q: the South American eel are arranged in 140 rows, each row stretching horizontally along the body and…

A: Given:- We know that We have given that the electroplates in the S.A  are arranged in 140 rows and…

Q: A capacitor of capacitance C = 1 μF has been charged so that the potential difference between its…

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Q: A teapot with a surface area of 715 cm is to be plated with silver. It is attached to the negative…

A: Surface area (A) = 715 cm2Potential difference of the battery (V) = 12 volts Resistance (R) = 1.5…

Q: B1

A: Given: Power,P=1.54WPotential Difference,V=3.80VTime,t=5.63hrs=5.63×3600s The quantity of energy…

Q: Calculate the rate of the flashlight’s energy consumption. Suppose a flashlight has 6.8 × 102 C…

A: Given data:  Charge (q) = 6.8×102 C Time (t) = 0.35 h Voltage (V) = 3.00 V Required: Power (P)

Q: Electrical energy is converted to heat at the rate of 7.56kJ/min in a resistor which has 270 C/min…

A: Given: The rate of heat energy across the resistor is 7.56 kJ/min. The rate of the charge is 270…

Q: Compute for the total charge, in microcoulombs. v(t) = 2cos(2π 49 t) is applied across a 48Ω…

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Q: Cell membranes contain channels that allow ions to cross the phospholipid bilayer. Suppose that a…

A: Current Time interval

Q: In a heart pacemaker, a pulse is delivered to the heart 200 times per millisecond. The capacitor…

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Q: Using your collected Voltage-Time data for discharging, calculate the time constant τ. Show the…

A: We have to calculate the value of time constant from the data given. Also we have to calculate,…

Q: A defibrillator is designed to pass a large current through a patient’s torso in order to stop…

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Q: Electric fish generate current with biological cells called electroplaques, which are physiological…

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Q: (a) A well-insulated electric water heater warms 125 kg of water from 20.0°C to 53.0°C in 33.0 min.…

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Q: A capacitor with capacitance C = 2.5 µF is charged to a voltage V = 5V. It is then discharged…

A: The capacitance of the capacitor is 2.5 μF. The resistance of the resistor is 100 Ω. The charged…

Q: The density of mobile electrons in copper metal is 8.4 x 1028 m, Suppose that / 9.0 x 101…

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Q: The density of mobile electrons in copper metal is 8.4 x 1028 m3. Suppose that / 4.7 x 1018…

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Q: While taking a bath, a person touches the metal case of a radio. The path through the person to the…

A: Resistance is The minimum current for ventricular fibrillation is Note:Find:The minimum voltage that…

Q: Part of an MRI machine circuit board contains four resistors in series. The resistances are 10, 20,…

A: If have any doubt feel free to ask.

Q: In the circuit as shown in the figure below, E1= 2 V, E2= 4 V, r1= 1 ohm, r2= 2 ohm and R= 5 2.…

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Q: (a) A well-insulated electric water heater warms 117 kg of water from 20.0°C to 43.0°C Ω (b) What…

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Q: The potential difference across a resting neuron in the human body is about 75.0 mV and carries a…

A: Given that,Potential difference : V = 75.0 mVcurrent : i = 0.200 mAPower : P = voltagexcurrentHere…

Q: Patients with recurring ventricular arrhythmia, irregular beats of the heart's ventricles, are often…

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Q: 4.75 02. What is the emf of the ideal battery? E R₁ www R₂ R₂ www R₁ R₂ R6

A: i6= 1.49 A R1=R2=R3= 1.89 ohm

Q: 5. A 2.00 Farad capacitor, an 8.00 Q resistor and a 24.0 V battery are connected in series with a…

A: Given: Capacitor,C=2FResistance,R=8ΩPotential Difference,V=24V A capacitor is an electrical energy…

Q: 2. Find the charge on the capacitor after the switch has been left open for some time, then closcd…

A: Given, C=2μF R1=0.5 ohm R2=0.25 ohm  E1=2 V E2=1 V

Q: One day on a particularly stormy night, a science student is watching the rain and thinking about…

A: Given: The charge is 21 V. The potential difference is 15050 V.

Q: An electric fish can generate a current with biological cells called electrocytes. The electrocytes…

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Q: The potential difference across the terminals of a battery is 20V when the circuit is open. When a…

A: The internal resistance of the battery can be calculated using  ε=V+Ir…

Q: A solar cell generates a potential difference of 0.17 V when a 550 Q2 resistor is connected across…

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Q: A battery having a voltage of 3.00 V is connected through a rheostat to a uniform wire 100 cm long.…

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Q: capacitor of 10.0 μF and a resistor of 130 Ω are quickly connected in series to a battery of 5.00 V.…

A: Capacitance C = 10 μF Resistance R = 130 Ω Time t = 0.00200 s   Charge Q = ?

Q: The voltage across a 2.5-µF capacitor in a copying machine is zero. What is the voltage after 15 ms…

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Q: Problem 2: On a cold day a battery has a terminal voltage of V = 12.21 V and an internal resistance…

A: Here We have to use some basic formula

Q: A teapot with a surface area of 790 cm2 is to be plated with silver. It is attached to the negative…

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Q: A heart defibrillator being used on a patient has an RC time constant of 9.5 ms due to the…

A: time constant = 9.5 ms C = 6.5 μF V = 11.5 kV

Q: An aluminum rod has a resistance of 1.590 Ω at 20.0°C. Calculate the resistance of the rod at 102°C…

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Q: In (Figure 1) the battery has emf 45.0 V and negligible internal resistance. R₁ = 7.00 2. The…

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Q: heart defibrillator being used on a patient has an RC time constant of 11 ms due to the resistance…

A: time constant = τ= 11ms capacitance = C = 8.5 X 10-6 F initial voltage = V = 14 kV

Q: Example 14. This question concerns an engineer investigating a faulty 10 underground electric cable.…

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Q: Cells in the nervous system have a potential difference of 70 mV across the cell membrane separating…

A: It is given that the there is a potential difference of 7.0mV across the cell membrane separating…

Q: A defibrillator is designed to pass a large current through a patient’s torso in order to stop…

A: The initial current flowing through the series of jolts by using ohms law is I0=ΔVC0R The time…

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.