1. A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 minutes. Silver 24 contains 5.8 x 10 free electrons per cubic meter. What is the current in the wire?

Q: A current of 8 Aruns through this piece of metal with resistivity 1.5x10-6 m. What is the electric…

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Q: There is a potential difference of 1 V between the ends of a 10 cm long graphite rod that has a…

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Q: A calculator draws a current of 0.0001 A for 5 minutes. How much charge flows through the…

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Q: An isolated conducting sphere has a 13 cm radius. One wire carries a current of 1.0000045 A into it…

A: The wire here is carrying the current into the sphere and other wire is drawing current out of it.…

Q: A 100-m-long copper wire of radius 0.24 mmmm and mass 160 g is connected across a 1.5-V battery. The…

A: Given: length, l=100 m radius, r=0.24 mm=0.24×10-3m voltage, V=1.5 V resistivity, ρ=1.7×10-8Ω⋅m

Q: 280 CHAPTER 6. ELECTRONICS .6.17 How many electrons will pass through a cylindrical copper wire of…

A: We know current density J =I/A Where I = current flowing coper wire  A = area of copper wire But…

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: An electric device draws 6.10 AA at 240 VV. If the voltage drops by 25 %, what will be current,…

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Q: 5. An iron wire has a cross-sectional area of 5.00 x 10-6m². Carry out the following steps to…

A: Given data The cross-sectional area of the wire is: A = 5 x 10-6 m2 The current in the wire is: I =…

Q: 2. A copper wire of cross-sectional area 1.20 mm2 has a current of 6.90 A flowing along its length.…

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Q: An aluminum wire 1.291 mm in diameter (16-gauge) carries a current of 3 amps. Overall Hint a. What…

A: The diameter of the Aluminium wire, d=1.291 mm The current flowing through the wire, i=3 A

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: A copper wire with a circular cross-section has a mass of 1.20 g and a resistance of 0.590 2. At…

A: Given: Mass of wire is m=1.20 g Resistance of wire is R=0.590 Ω At temperature T=20°C, resistivity…

Q: V potential difference is applied between the ends of a 0.70 mm-diameter, 60 cm-long nichrome wire.…

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Q: A cylindrical platinum wire is 0.0644 mm in diameter and 1.05 m in length. The wire carries a 1.05 A…

A: The diameter of the wire, d=0.0644mm=0.0644×10−3m.So its radius isr=d/2=0.0644×10−32m.So the…

Q: The mean time between collisions in iron is 4.8x10-15 s. Part A What electron current is driven…

A: Given:-  The mean time between the collision in iron  t= 4.8 x 10-15 Sec  The diameter of the iron…

Q: An aluminum wire 2.053 mm in diameter (12-gauge) carries a current of 1.5 amps. Overall Hint a. What…

A: The number density is found as n=ρM×NA Here ρ,M,NA are mass density, molar mass and Avogadro number…

Q: 1. A tungsten wire has a radius of 0.072 mm. When 128 V is applied across the ends of the hot wire,…

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Q: The conduction electrons in a cylindrical, current-carrying wire have a drift velocity of 0.35 mm/s.…

A: Given Drift velocity vd = 0.35 mm/s = 0.35 × 10-3 m/s Radius of wire r = 1 mm = 10-3 m Number of…

Q: Problem 2: Suppose you have a 2.2 cm diameter rod of pure silicon that is 22 cm long. > A What…

A: Given: The length of the wire is 22 cm. The diameter of the wire is 2.2 cm. The resistivity of the…

Q: (1) What is a definition of electric current? Label the variables. (2) Suppose that 1016 electrons…

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Q: A calculator draws a current of 0.0003 A for 4 min. How much charge flow

A: Q = i*t    where i is current , t is time  given data I = 0.0003 , t = 4*60 = 240 seconds    q =…

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.