The potential difference across the terminals of a battery is 20V when the circuit is open. When a current of 2A flows, the potential difference across the battery drops to 16V.

Q: Suppose that the resistance between the walls of a biological cell is 1.10 1010 Ω. (a) What is the…

A: Given information: The resistance offered bt the cell wall (R) = 1.10 ×1010 Ω The voltage across the…

Q: An uncharged capacitor and a resistor are connected in series to a battery. If V=35V, C=6µF, and…

A: Maximum charge = C * V  = 6 * 10-6 * 35 = 2.1 * 10-4 CoulombMaximum current = V/R  = 35/8  = 4.375…

Q: What current flows through a 2.45-cm-diameter rod of pure silicon that is 21.5 cm long, when 1.00 x…

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Q: If a potential difference of 10 V is applied across a 10-0 resistor, then the current (in A) flowing…

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Q: using KVL, KCL, find the potential drop and the current through each resistor in the circuit sh ere…

A: Potential drop V =IR

Q: The voltage on the 2 0 resistor is 12V for the circuit in the figure. Find the voltage across the 6…

A: Answer is d   18v

Q: A copper wire has a nominal diameter of l1.02 mm This wire carries a constant current of 1.67 A. The…

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Q: A potential difference of 50.0V can move 3.22x 1022 electrons in 5 minutes through a wire. What is…

A: Given data:  Potential difference (V) = 50.0 V Number of electrons (n) = 3.22 × 1022 Time (t) = 5…

Q: In the circuit shown, 30 Determine the following: 2v+ A. Magnitude and direction of the current B.…

A: In this question we have to determine the magnitude and direction of the current in the circuit and…

Q: A conductor has a cross-sectional area of 2.3x 10-6 m and the number of free electrons per unit…

A: Drift speed is given by -      Drift speed= current/(n × e ×A) Where, n=number density e=Electric…

Q: What is the value of current if a 1000 C charge flows in a conductor over a period of 5 minutes?

A: Given that Charge q = 1000 C Time for flow t = 5 min

Q: The current supplied to an air conditioner unit is 2.08 amps. The air conditioner is wired using a…

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Q: A current of 0.86 A flows through a copper wire 0.74 mm indiameter when it is connected to a…

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Q: In a discharge tube, the number of protons drifting across any cross-section is 1-0 x 1018 per…

A: Given : Number of protons drifting =1.0×1018 per secondNumber of electrons drifting =2.0×1018 per…

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

A: Given:Potential difference across the resting neuron = 75 mVCurrent in the neuron = 0.200 mA

Q: A conductor has a cross- sectional area of 2.3x 10 6m2 and the number of free electrons per unit…

A: Given that the cross-sectional area of conductor and number of electrons per unit volume and current…

Q: A potential difference of 14 V is found to produce a current of 0.38 A in a 3.3 m length of wire…

A: Answer :-  Given  Potential difference (V) = 14 v  Current (I) = 0.38 A  Length of a wire (l) = 3.3…

Q: A potential difference of 14 V is found to produce a current of 0.38 A in a 3.3 m length of wire…

A: (a) As resistance=R = V / I         =14 / 0.38 R = 36.84Ω

Q: What magnitude of current (in A) will flow in a 8 Q resistor if the potential difference across it…

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Q: 3.0 A battery has an emf of 12 V and an internal resistance of 0.0500 2. What is the terminal…

A: Given : Emf (E) = 12 V Resistance (R) = 0.0500 Ω Current (I) = 8 A

Q: In a tDCS treatment procedure, 0.85 mA of current flows through a patient’s brain when there is a…

A: The equivalent resistance between the electrodes is given by, R=VI Here, V is the potential…

Q: A length of metal wire has a radius of 5.00 × 10−3 m and a resistance of 0.100 Ω. When the potential…

A: The radius of metal wire,

Q: How many electrons pass through a 20-Ω resistor in 10 min if there is a potential drop of 60.4 volts…

A: Given data: Resistance, R=20 Ω Time, t=10 minutes = 10×60 =600 s Potential difference, ΔV=60.4 V

Q: A current of 4.50 A flows in a conductor for 7.50 s. How many electrons pass a given point in the…

A: Given data:  Current (I) = 4.50 A Time (t) = 7.50 s Required: Number of electrons passed through…

Q: In the circuit shown, a current of 3.00A flows in the direction shown. Calculate the unknown emf Ɛ…

A: The circuit diagram is shown below.

Q: A potential difference of 11 V is found to produce a current of 0.40 A in a 3.3 m length of wire…

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Q: In the circuit shown, 30 Determine the following: 2v+ A. Magnitude and direction of the current B.…

A: Given dataR1=3ΩR2=4ΩR3=6ΩR4=5ΩV1=7VV2=2VV3=4VV4=6VTo findI=?VadVcfVhe

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: When a 92.1 Q resistor is connected across a 6 V battery, a current of 62.8 mA flows. What is the…

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Q: A gold wire of 0.500 mm diameter has 8.20 × 1028 conduction electrons per cubic meter. If the drift…

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Q: You have a battery marked "6.00 V." When you draw a current of 0.385 A from it, the potential…

A: Given value--- emf of battery = 6 Volt . current = 0.385 Amp . potential difference = 5.29 V. We…

Q: A practical battery supplies a current of 4 A with a terminal voltage of 15 V. When being charged…

A: EMF of a battery is the voltage it supplies at constant rate when it is connected to a resistance.

Q: In a lightning strike, a charge of 18 C is transferred between a cloud and ground in 2.0 x 10 second…

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Q: The density of free electrons in a cylindrical metal wire is 7x1048 m. The diameter d-12.23 mm and…

A: density of free electrons= 7 x 1028 m-3 Diameter of wire= 12.23 mm   , r= 0.6115 cm or 0.6115 x…

Q: The potential difference across a resting neuron in the human body is about 70.0 mV, and the current…

A: WE KNOW THAT POWER P=IVgiven V=70mVI=200μA

Q: The current supplied to an air conditioner unit is 4.00 amps. The air condkionet is wired using a…

A: Given that. Current I = 40 A Diameter D = 2.588 mm, charge density n = 8.48 X 1028 electrons/m3

Q: A practical battery supplies a current of 5 A with a terminal voltage of 15 V. When being charged…

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Q: What potential difference must be applied across a 5 Ω resistor in order that the resulting current…

A: Given, Resistance (R) = 5 ohm Current (I) = 0.50 A

Q: Two resistors of 36 Q and 55 Q are connected in series. If the voltage drop across the 36-N resistor…

A: R1 = 36 ohm R2 = 55 ohm Voltage drop across R1 is V1 = I R1 = 50 V  What is voltage drop across R2

Q: A potential difference of 14 V is found to produce a current of 0.45 A in a 3.8 m length of wire…

A: We know that Resistance  R=V/I  And resistivity p=RA/L

Q: he potential difference across the terminals of a battery is 8.1 V when there is a current of 1.51 A…

A: The terminal potential difference of a cell is defined as the potential difference between the two…

Q: A potential difference of 15 V is found to produce a current of 0.36 A in a 3.2 m length of wire…

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Q: In the circuit shown, Determine the following: A. Magnitude and direction of the current B. The…

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Q: You have a battery marked "6.00 V." When you draw a current of 0.399 A from it, the potential…

A: Emf of battery ε == 6.00 V Current drawn from the battery I = 0.399 A potential difference for this…

Q: A 4.7 A current is set up in a circuit for 6.7 min by a rechargeable battery with a 6.0 V emf. By…

A: