QUESTION A current-carrying metal wire has a cross sectional area that gradually becomes aller from one...
QUESTION 7 A current-carrying ohmic metal wire has a cross-sectional area that gradually becomes smaller from one end (A) of the wire to the other end (B). A current / is passing through the wire. How does the current density vary along the wire as the area becomes smaller from end (4) to end (B)? A B Jincreases. decreases Not enough information OJ remains constant
If a current-carrying wire has a cross-sectional area that gradually becomes smaller along the length of the wire, the drift velocity: a. increases along the length of the wire if the resistance increases too b. decreases along the length of the wire if the resistance decreases too c. decreases along the length of the wire d. increases along the length of the wire e. remains the same along the length of the wire
2. A copper wire carrying a current of 5.00 A has a cross-sectional area of 5.00 x 106 m2. Find the drift speed of the electrons in the wire. The density of copper is 8.96 g/cm3. (Assume that each copper atom supplies one free electron.)
A current-carrying conductor made of aluminum gradually narrows as shown in the figure below. The cross-sectional area of region 1 is twice that of region 2. In region 1, the current is 7.55 mA and the current density is 3.80 kA/m^2. Find the drift speed in both regions of the conductor. Region 1 Your response differs from the correct answer by more than 10%. Double check your calculations, m/s Region 2 m/s
1. As a stream of water flows, the cross-sectional area of the stream becomes smaller. If it initially moves with a speed of 1.8 m/s and then the cross-sectional area decreases to one-fourth of the original area, what is the water speed in this narrowed part of the stream?____ m/s 2. (As water falls, its speed increases, due to the acceleration of gravity. If you make a steady stream of water flow from a faucet, you will see that the...
A certain metal wire has a cross-sectional area of 1.0 cm2 and a resistivity of 1.7 × 10-8 Ω ∙ m. How long would it have to be to have a resistance of 1.0 Ω? Answers: A. 5.9 x 106 m B. 5.9 km C. 5.9 x 104 m D. 5.9 m E. 590 m
A wire is 0.79 m long and 0.77 mm2 in cross-sectional area. It carries a current of 4.1 A when a 2.0 V potential difference is applied between its ends. Calculate the conductivity ? of the material of which this wire is made.
A wire is 0.79 m long and 0.82 mm2 in cross-sectional area. It carries a current of 3.8 A when a 2.4 V potential difference is applied between its ends. Calculate the conductivity σ of the material of which this wire is made.
A wire is 1.3 m long and 0.93 mm2 in cross-sectional area. It carries a current of 5.8 A when a 1.8 V potential difference is applied between its ends. Calculate the conductivity σ of the material of which this wire is made.
A flat loop of wire consisting of a single turn of wire of cross-sectional area 0.25m^2 and resistance of 4 Ohm is located in a magnetic field as shown to the right. The magnetic field increases uniformly in magnitude from 0.6T to 5.4T in 0.6s. As a result, the current in the loop is (Magnitude AND direction)