320-km-long high-voltage transmission line 2.0 cm in diameter carries a steady current of 1,090 A. If the conductor is copper with a free charge density of 8.5 1028electrons 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.)

The voltage across a membrane forming a cell wall is 84 mV and the membrane is 7.5 nm thick.  What is the electric field strength in the cell wall, in volts per meter?

A high voltage transmission line of diameter 2.09 cm and length 4.9017 km carries a steady current of 1.1 x 103 A. If the conductor is copper with a free charge density of 4 x 1028 electrons/m3 how long (in seconds) does it take one electron to travel the full length of the cable? (e=1.6 x 1019 C). Use scientific/exponential notation to represent your answer.

the rate of charge (q) flowing in a piece of copper wire is 0.0032 c at a cross -sectional surface area in 15ms. How much current I(mA) is flowing in the circuit ?

2) What is the drift speed of electrons in the 12-gauge wire of a certain conductor in a typical building of the UET physics lab having cross- sectional area of 3.31 um^2 and carries a uniform current of 10000.0 mA? Suppose each atom of the conductor contributes one free electron to the current, whereas the molar mass and density of the conductor is 63.5 g/mol and 8.92 g/cm^3.* Ob) 3 mf O c) 2.3 PF od) 2.1 m e) 2 UF f) 2 mF O F g) 1 m F O HINE

The quantity of charge through a conductor is modeled as Q = (3.00 mC/s^4)t^4 - (3.00 mC/s)t + 8.00 mC. What is the current (in A) at time t = 2.00 s?