A current of 2.5 A flows through a 10 ohm resistor for 1.5 minutes.  The number of electrons entering or leaving the resistor is: 1.4 x 1021 2.8 x 1022 2.5 x 1021 7.4 x 1021

Q: A copper wire has a length of 120 m and a radius of 0.20 mm. It carries a current density of 4.8 x…

A: As per our guidelines, we are supposed to answer only first one question in case of multiple…

Q: Copper contains 8.4×1028 free electrons/m3. A copper wire of cross-sectional area 7.4×10-7 m²…

A:

Q: A current of 7.00 A flows in a conductor for 8.50 s. How many electrons pass a given point in the…

A: Write the given values with suitable variables. I=7 At=8.5 s Here, I and t are the current and the…

Q: An electric device delivers a current of 5 A for 10 seconds. How many electrons (1.6x10-19 C) flow…

A: SOLUTION AS

Q: A typical lightning bolt may last for 0.152 s and transfer 1.15 ✕ 1020 electrons. Calculate the…

A: The answer is below

Q: A piece of iron rebar on a construction site measures 2 cm in diameter and is 3m long. What…

A: The resistance can be found using R=LσA Where, σ is electrical conductivity of the material,L is…

Q: yov 20v Gov 2. SR

A:

Q: A current of 2 A flows through a gold wire with a radius of 3 cm and a length of 15 m. There are…

A: Current (I) = 2 A radius (r) = 3 cm Length (L) = 15 m number of free electrons per unit volume =…

Q: Some airliners use wires of aluminum(resistivity 2.75×10−8 Ω ⋅m2.75×10−8 Ω ⋅m) rather than copper to…

A: a) The required electric field is, b) The required resistance is,

Q: A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done…

A:

Q: How long does it take electrons to get from a car battery to the starting motor? Assume the current…

A: Given: The current is I = 310 A. Cross sectional area of wire is, The length of the wire is L =…

Q: How long does it take electrons to get from a car battery to the starting motor? Assume the current…

A: Given data The current in the circuit is given as I = 340 A. The cross-sectional area is given as A…

Q: How long does it take electrons to get from a car battery to the starting motor? Assume the current…

A: Time taken by electrons is,

Q: An electric device delivers a current of 1 A for 10 seconds. How many electrons (1.6x10-19C) flow…

A:

Q: A 4.0-Ω resistor has a c

A: Given:-  R= 4 ohm I =3.0 A t= 5 min = 5 X60= 300 sec  Find;-  The number of the electron flow by the…

Q: How many electrons pass through a 20-W resistor in 10 min if there is a potential drop of 30 volts…

A: Given: The power is 20 W. The time interval is 10 min. The potential drop is 30 V.

Q: 28- The power of an unknown resistor is 0.50 W. What is the current flowing through the resistor…

A:

Q: Using Kirchhoff's rules, (a) find the current in each resistor in Figure. (b) Find the potential…

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

Q: An electric device draws 6.5 A at 240 V. If the voltage drops by 15%, what will be the new current?…

A: answer:) option(b) 5.5 A Explanation:) According to ohm’s law V=IR when V=240 v, I=6.5 A so…

Q: The current density in a copper wire of diameter 1.02 mm is 1.75x105 A/m2. The number of free…

A: diameter (d) = 1.02 mm radius (r) = 0.51 mm = 5.1×10-4 m Current density (J) = 1.75×105 Am2Number of…

Q: One mole of electrons is approximately 6.0×1023 electrons (that’s six hundred billion trillion…

A:

Q: The current in a resistor decreases by 7 A when the voltage applied across the resistor decreases…

A: Given : ∆I = -7 A negative because current in the resistor decreases V1 = 30 V V2 = 10 V

Q: A 220 – V bulb draws a current of 10 A. How much charge in kilocoulombs will pass through the bulb…

A:

Q: In Kirchoff's experiment, the current and potential differences are measured. Then J2 is removed.…

A: The given circuit is,  In loop2, when J2 is removed then the loop2 becomes open and whatever…

Q: A total of 2.0 × 1013 electrons pass a given point in a wire in 15 s. What is the current in the…

A: Given, Total 2.0 × 10^13 electrons Passing time=15 sec  qe = 1.6x10-19 C Current is defined as rate…

Q: Calculate the magnitude of the current density in a conductor if there are 5x10 ^ (28) (conduction…

A: Given  No of conduction electrons n=5×1028 e/m3 Drift velocity Vd=0.05×10-3 m/s

Q: A current of 2.37 A flows through a 1.06 mm diameter copper wire that is connected to a capacitor…

A:

Q: What current will a 3.0 V battery cause to flow? The resistance of the battery is 14.0 Ω.  A) 4.7 A…

A: Given: Voltage across the battery V = 3 V Resistance of the battery R = 14.0 Ω

Q: A current of 4A passes through a wire. The number of electrons crossing a point in the wire in 5…

A: According to Bartleby Q &A  guidelines , i am giving answer of first question  Thankyou.

Q: 39. A voltage of 12 V is placed across a copper wire circuit with a wire length of 1.0 m and…

A:

Q: Four identical resistors are connected in series to a battery. If the current of 12 A flows from the…

A: current = i = 12 Amp resistors are in series

Q: 3.0 A of electric current pass through a 4.0 Ω resistor. How many electrons pass through the…

A: The rate of change in charge is called electric current.Mathematically, I=qtBut q=neTherefore,…

Q: A length of copper wire is joined in series to a length of silver wire of the same diameter. Both…

A: Given, A length of copper wire is joined in series to a length of silver wire of the same diameter.…

Q: A high voltage transmission line with a diameter of 2 cm carries a steady current of 980 A. The…

A: Given value--- diameter = 2 cm. current = 980 Amp. free charge density = 8 × 1028 electron/m3.…

Q: A copper wire has a diameter of 0.60 mm. The number density of conduction electrons in copper is 8.5…

A: Given(s): Current, I=9.0 A The number density of conduction electrons, n=8.5 x 1028 m-3. Diameter,…

Q: In the circuit in the figure below, determine the following. 40.0 V 360 V. 80.0 V 200 NE 80.0 ΩΣ…

A:

Q: Find the number of electrons flowing through a battery in 12 seconds if the current is 3.0 A. Group…

A:

Q: An ammeter connected in series with three resistors reads an electric current of 2 A. What is the…

A: There are two type of connection of resistance, series and parallel. The ammeter shows the reading…

Q: A metallic wire has a diameter of 4.12 mm. When the current in the wire is 8.00 A. the drift…

A: Given values,  Diameter=4.12 mmRadius = Diameter2=2.06 mm1 mm = 0.001 meter Therefore,Radius…

Q: A current of 6.0 A flows through an electrical device for 10 seconds. How many electrons flow…

A:

Q: A current of 257 mA travels through a network of three resistors in parallel.  The resistors have…

A:

Q: How many electrons pass through a 20-W resistor in 10 min if there is a potential drop of 30 volts…

A:

Q: Four resistors are connected in parallel across a 9.20−V battery. They carry currents of 150mA,…

A:

Q: A 4.0- 2 resistor has a current of 3.0 A in it for 5.0 min. How many electrons pass through the…

A: We have charge (Q) = Current(I) x Time (t)

Q: If a car battery provides 3.5 A of current, how much time would it take to pass 100 C of charge…

A:

Q: The potential difference between points in a wire 75.0 cm apart is 0.938 V when the current density…

A:

Q: A net charge of 50 C passes a point on a wire in 2.0 min. What is the current in the wire?…

A: Charge (Q) = 50 C time (t) = 2 min

Q: The figure shows two connected wires that are made of the same material. The current entering the…

A: Given, R1=1mm R2=2mm V1=Vo V2 is to find