While taking photographs in Death Valley on a day when the temperature is 52.0°C, Bill Hiker finds that a certain voltage applied to a copper wire produces a current of 1.000 A. Bill then travels to Antarctica and applies the same voltage to the same wire. What current does he register there if the temperature is -88.0°C? Assume no change occurs in the wire's shape and size.

Under the influence of a constant E field of 700.0 N/C; 4.53* 1016 electrons pass through a 5.00 cm piece of wire in 5.00 seconds. a) What is the potential difference across the wire? b) What is the average current during this time period? c) What is the average power during this time? d) What is the effective resistance of the wire?

A 190-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,230 A. If the conductor is copper with a free charge density of 8.50 × 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.) yr

A lightning rod on top of a building consists of an iron spike 1.5 m long with a circular crosssection of diameter 1.5 cm. During a lightning strike, the rod carries a current of 1000 A. What is the potential difference across the rod when this current flows? The resistivity of iron is 1.0 x 10-7 Ωm.

A current of 17 μA passes through a wire. a) Express the charge Q passing through the wire in terms of the current I and the time interval Δt.  b) In a time interval of Δt = 61 s, how much charge has passed through the wire in μC?