A lamp has a current of 1.95 A. In hours, how long does it take for 1 mole of electrons to pass through the lamp?

Q: A wire is 1.1 m long and 1.2 mm2 in cross-sectional area. It carries a current of 4.8 A when a 2.4 V…

A: The length of the wire L = 1.1 m  The cross-sectional area of the wire = 1.2 mm2 The carries a…

Q: An aluminum wire having a cross-sectional area equal to 3.70 x 10-6 m² carries a current of 7.00 A.…

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Q: (2000000) electrons flow through a metal for 1 minute. Find the value of current.

A: GivenNumber of electron ,N=2000000Time ,t=1 min=60 s

Q: The starter motor of a car engine draws a current of 190 A from the battery. The copper wire to the…

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Q: 1-4 2.3x10 mol of charged particles pass through a cell membrane in 4,4x102 s. If each particle…

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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: The heating element of a coffee maker operates at 120 V and carries a current of 3.50 A. How long…

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Q: At what temperature (in Celsius) will aluminum have a resistivity that is three times the…

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Q: A wire is 1.2 m long and 1.1 mm² in cross-sectional area. It carries a current of 5.5 A when a 2.1 V…

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Q: A typical lightning bolt may last for 0.197 s and transfer 1.13 x 1020 electrons. Calculate the…

A: Time ( t ) = 0.197 s  Number of electrons ( n ) = 1.13 * 1020 electron

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: A current of 0.87 A flows through a copper wire of radius 3.53 mm; copper has 8.50x1028 free…

A: Drift speed is the average speed attained by electrons in a material due to electric field

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: A current of 0.300 A through your chest can send your heart into fibrillation, ruining the normal…

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Q: Earth's lower atmosphere contains negative and positive ions that are produced by radioactive…

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Q: Is this the right answer?

A: Step-1:To determine: what is the charge at time t=6s.Given information:Between time t < 0 to t =…

Q: The starter motor of a car engine draws a current of 190 A from the battery. The copper wire to the…

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Q: A wire is 100.0 m long and 0.800 mm in diameter. The first x meters of the wire is made of copper…

A: Given: The length of the wire is 100 m. The diameter of the wire is 0.800 mm. The potential…

Q: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. Assume constant…

A: A 2.0 cm long tungsten filament in a florescent light bulb has a radius of 0.3 mm. cross sectional…

Q: A tungsten wire is used to determine the melting point of lead. A battery of 6.00 V is attached to…

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

A: Given,I=4 At=5 mins= 300 sec

Q: When a current flows in an aluminum wire of diameter 2.83 mm, the drift speed of the conduction…

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Q: Wire Cand wire D are made from different materials and have length Lc = LD = 2.6 m. The resistivity…

A: Concepts: The resistance of a wire of length L and cross-section A is given by,         R=ρLA…

Q: Two cables of the same length are made of the same material, except that one cable has twice the…

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

Q: A current of 8.5 A flows through a conductor for 10.4 seconds. What amount of charge passes through…

A: Given data :                          Current    =   I                           Time     =     t…

Q: When a ray is stunning its prey, it produces a potential difference of 45 V and a current of 0.12 A…

A: V = 45 V  I = 0.12 A  t = 5 ms = 0005 s  n = 400

Q: Suppose the electron drift velocity in a 5 mm diameter copper wire is.10 ms' is used to light a…

A: Given: The diameter of the copper wire is = 5 mm The drift velocity of electrons is =0.10 m/s The…

Q: A certain wire has a diameter of 0.55 mm and contains 8,5 x 10^28 free electrons/m^3.If the wire has…

A: Diameter of wire = 0.55mm no. Of electron = 8.5×1028 free electron/m3 Current= 3.1 A Area A =πR2=…

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

A: 20 min 36sec

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: Given data:  Current (I) = 2 A Radius (r) = 3 cm = 0.03 m Free electron density (n) = 3.50×1020…

Q: A conductor has a free charge density of 1029 electrons per cubic meter, and the resistivity of p =…

A: Given Data: Free charge density (n) = 1029/m3.Resistivity (ρ) = 2.0×10-8 Ω.m.Drift velocity (vd) =…

Q: Current and Resistance Problem 18:   Consider two wires made of different materials. Wire A has a…

A: Please see the attached image for the solution.If there are queries or if the image is not loading,…

Q: A copper wire of cross-sectional area 1.40 mm² has a current of 3.90 A flowing along its length.…

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Q: 1. Consider a cylindrical wire that has conduction electron density 6.0 x 1028 and radius 0.5 mm. An…

A: The average velocity obtained by charged particles (e.g. electrons) in a material owing to an…

Q: drift speed

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

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Q: Rank these cases in terms of their current density from the highest to the lowest

A: Given:   Mass of electron, m = 9.109 x 10-31 kg Charge of electron, e = 1.6 x 10-19 C

Q: A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.8x102 free…

A: diameter of wire=2.6mm Free electron per meter cube=5.8 x 1028electrons

Q: The room temperature resistivity of gold isp= 2.44 x 10-8 N. m.Agold wire that is 0.75 mm in…

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Q: A conductor has a cross-sectional area of 2.3×106 m² and the number of free electrons per unit…

A: In this question, cross sectional area (A) , free electron density (n) & current (I) are given.…

Q: A wire is 1.3 m long and 0.97 mm2 in cross-sectional area. It carries a current of 5.0 A when a 1.6…

A: Write the provided values with suitable variable.

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: You are working at a company that manufactures electrical wire. Gold is the most ductile of all…

A: Given: The mass of the gold is m = 1.00 g = 0.001 kg. The length of the gold wire is  L = 2.40 km =…

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

A: Data provided:  Current (I) = 12 A Voltage (V) = 25 V Time (t) = 3 ms = 3×10-3 s Asked: Energy (E)

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.