1.)Suppose a 12-gauge copper wire, which has twice the diameter of the common 18-gauge wire (1.02mm diameter). If the current remains the same, what effect would this have on the magnitude of the drift velocity (i) none— vd would be unchanged; (ii) vd would be twice as great; (iii) vd would be four times greater; (iv) vd would be half as great; (v) vd would be one-fourth as great. Vd. Use the formula 2.)What is the resistance value of a practical resistor with color codes green, violet, black?

Q: 7) Shown below are six segments of wires that are carrying electric currents. All of these segments…

A: GIVEN 6 pieces of conducting wires of different resistances and different currents flowing through…

Q: A battery with internal resistance r= 0.16ohm and emf ε= 404 V is connected to the ends of resistors…

A: Internal resistance , r = 0.16 Ω EMF , e = 404 V R1 = 4 Ω R2 = 12 Ω To find = Total heat energy…

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A:

Q: II) A 4.80-m length of 2.0-mm-diameter wire carries a750-mA dc current when 22.0 mV is applied to…

A:

Q: The total current is almost equal: *

A: Potential Difference= 10 v

Q: (i) Calculate the current and resistance in th (ii) The coil of heater is made from a wire o 2x10 m²…

A:

Q: A O A) 6A OB) 15A

A: Given: The electric potential difference is 120 V. The resistance of the heater is 8 Ω.

Q: 17) A 0.32 uC particle moves with a speed of 16 m/s through a region where the magnetic field has…

A: Charge of the particle is q=0.32 μC  =0.32 μC×10-6 C1 μC  =3.2×10-7 C The speed of the particle is…

Q: 37)Consider the circuits shown below. (a) What is the current through each resistor in part (a)? (b)…

A: Since you have asked more than three sub parts of a question, so according to our code of conduct we…

Q: 1. When the length of the conductor is same and the area of cross-section reduced to half then its…

A: Note- Bartleby's guidelines allowing answer only the first question.

Q: 13- Calculate the cost of Energy for (a) dryer machine with 5000W and 220V for 4 weeks while it…

A:

Q: What causes resistivity in ordinary conductors? Why (and in what way) does the resistivity change if…

A: Resistivity is a measure of a material's ability to oppose the flow of an electric current. It is…

Q: (3) A 240 volt electric water heater "pulls" a current of 15.8 A. Determine the power used by, and…

A: Given:-  The voltage of the electric water heater V = 240 Volt  The current  I = 15.8 A  Find:-  The…

Q: 9. When a 40V battery is connected across an unknown resistor there is a current of 100 mA in the…

A:

Q: 1a) An electrician wishes to cut a silver wire (p = 1.59×10-8 Qm) that has 2.0N of resistance. The…

A: Given  Resistivity of wire ρ=1.59×10-8Ωm Resistance R=2Ω Radius r=0.35×10-3m

Q: 5. A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when…

A: Given that:-Diameter of wire, d=2.5 mm=2.5×10-3 mLength of wire, l=2.50 mVoltage across wire, V=3.0…

Q: If 3.00 x 10-3 kg of gold is deposited on the negative electrode of an electrolytic cell in a period…

A: The mass of the gold is The time taken for the deposition of the gold is The molecular weight of…

Q: 1. (i) The resistance of a wire of 0.02 cm radius is 30. If the material is tungsten of resistivity…

A: Given data: Resistance of wire, R=3 Ω Radius of wire, r=0.02 cm=2×10-4m Resistivity of tungsten,…

Q: the magnitude of 14 is r

A:

Q: 1. How much current is flowing in a circuit where 1.27 x 10 electrons move past a given point in 100…

A: Solution:-Given thatnumber of electrons (n)=1.27×1015time (t)=100 ms=100×10-3 s

Q: the current through it? a first turned on.] temperature? [1516 W

A:

Q: 3) Some motorcycle enthusiasts wear electric vests that keep them warm as they ride. The vest is…

A: Solution:- 1) The current flowing through a conductor at particular temperature, is given by Ohm's…

Q: 11. (II) A 12-V battery causes a current of 0.60 A through a resistor. (a) What is its resistance,…

A: Given Potential V=12 V Current I=0.6A

Q: 3. (4 points) A toaster draws 1.5 A of current when operating. In 8 seconds, how many electrons pass…

A: q =It q = ne e = 1.6 × 10-19 C n = number of electrons pass through the heater  ne = It n = It/e…

Q: 1. (10') (a) A resistor has four color bands brown, orange, yellow, and Gold. What is its…

A: NOTE: According to guidelines, I can give solution to first three questions. If you need help with…

Q: Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a…

A: Given data: Battery Voltage (V) = 4.5 V Wire Diameter (D) = 0.75 mm = 0.75×10-3 m Power (P) = 10 W…

Q: 13) A bird lands on a bare copper wire carrying a current of 32A. The wire has a cross sectional…

A: current carrying through copper wire ,I= 32Across sectional area of copper wire ,A =0.13…

Q: 3. (I) What is the current in amperes if 1200 Na* ions flow across a cell membrane in 3.5 us? The…

A: Given:Number of Na ion, n=1200Time taken, t=3.5 μs=3.5×10-6sTo find:Current,I=?

Q: If the ratio of current intensities passing over X and Y conductors connected in parallel as in the…

A:

Q: 4. A 65-W lightbulb operates on a potential difference of 95 V. Find (a) the current in the bulb and…

A:

Q: 3.) Determine the resistance of a 6.0-meter length of copper wire having a diameter of 4.0 mm.…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: 17. (II) A certain copper wire has a resistance of 10.00. At what point along its length must the…

A:

Q: 19- chapter27-question17 A small current of 1.5x 1010 A exists in a copper wire whose radius is 1.0…

A: The current flowing in a conductor is given by I = n*e*A*Vd Where, I = current n = number of free…

Q: The 3m long copper cable with a cross-sectional area of 81 mm² draws a current of 100 A when used to…

A: Given data:  Length of copper cable (L) = 3 m Cross section area (A) = 81 mm2 = 81×10-6 m2  Current…

Q: Which of the following statements is true? In a closed circuit; current leaves the positive terminal…

A: In a closed circuit, the current flows from higher potential to lower potential. Positive terminal…

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.