Suppose 1.67 C of charge passes through the filament of a light bulb in 2.00 seconds. How many electrons pass through the filament n 5.00 s? Express all numerical values in three significant figures. The current in the light bulb is: milliamperes The total amount of charge passing through the filament in t=5.00 s is: coulombs Since a single electron has a charge of -1.60 × 10¬19 C, the number of electrons passing through the filament in t= 5.00 s is: N= x 1019 electrons

A conductor has a cross-sectional area of 2.3x106 m² and the number of free electrons per unit volume is 8.5 X1028 electron/m³. When the current is 7.1 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6×1019 c.

A current of 6.00 A flows in a conductor for 5.5 s. How much charge passes a given point in the conductor during this time?

A 320-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,200 A. If the conductor is copper with a free charge density of 8.5  1028 electrons per cubic meter, how many years does it take one electron to travel the full length of the cable? (Use 3.156  107 for the number of seconds in a year.)

A ball has a charge of 30 μC and travels in a circle that has a radius of 0.5 m every 2 s. What is the current?

The conduction electrons in a cylindrical, current-carrying wire have a drift velocity of 0.35 mm/s. The wire has a radius of 1.0 mm and contains 8.6 x 1028 conduction electrons per m3. What is the current in the wire? (The magnitude of the charge of an electron is 1.602 x 10-19 C.)     a. 3.0 A   b. 6.0 A   c. 9.0 A   d. 12 A   e. 15 A

While tracking the speed of individual particles is great, a more useful and simpler quantity to measure is current which is the amount of charges moving through some cross-sectional area per unit time. It has units of Coulombs per second (or Amps} and is abbreviated by the symbol i. See if you can write out a formula for the current through a section of wire with cross sectional area A given the average speed of particles v, the charge on each particle, q, and the number of charges per unit volume, n. Use dimensional analysis for this formula. Which of the terms in your formula do you think the electric field can influence?

A current of 9.50 A flows in a conductor for 6.0 s. How much charge passes a given point in the conductor during this time?

A conductor has a cross-sectional area of 2.3x10-6 m² and the number of free electrons per unit volume is 8.5X1028 electron/m3. When the current is 12.3 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6X10- 19 9 С. Select one: O A. 39.32 О В. О.52 OC. 0.39 O D. 51.62 O E. 0.27

Copper has 8.5×1028 electrons per cubic meter. How many electrons are there in a 50.0 cm length of 12-gauge copper wire (diameter 2.05 mm)? If a current of 2.10 A is flowing in the wire, what is the average drift speed of the electrons along the wire? (There are 6.24×1018 electrons in 1 coulomb of charge.)