While taking photographs in Death Valley on a day when the temperature is 59.0°C, Bill Hiker finds that a certain voltage applied to a tungsten 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.

A coil of Nichrome wire is 29.0 m long. The wire has a diameter of 0.460 mm and is at 20.0°C. (a) If it carries a current of 0.460 A, what is the magnitude of the electric field in the wire? (b) If it carries a current of 0.460 A, what is the power delivered to it?

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The current in a wire at time t is given by the expression I(t) = (2.4 A) e−t/(2.3 µs), where t is in µs. a. Graph I vs t for the interval 0 ≤ t ≤ 10 μs. b. Find an expression for the total amount of charge that has entered the wire at time t if Q(0) = 0 C. c. Graph the total amount of charge that has entered the wire as a function of time for the same interval as in part a.

Three resistors are made out of three different materials and Material 1 0.00479 Q-m have different (but uniform) cross sections. Resistor 1 has a Material 2 0.391 Q-m circular cross section of radius 1.18 mm. Resistor 2 has a Material 3 6.87 x 10- 2.m square cross section with a side length of 1.37 mm. The third resistor's cross section is a right triangle with two sides of length 6.47 mm. All of the resistors are 0.838 cm in length. Use the provided table of resistivities to calculate the resistance 3 of each resistor. R1 R2 R3 =

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.

Calculate the hours a 25.0 Watt light bulb will burn when powered by a 13.0 g lead storage battery at a constant voltage of 1.5V. 1 Watt = 1 J/s. Pb(s) →Pb+2(aq) + 2e-1 Group of answer choices 0.0504 hours 0.202 hours 0.101 hours 9.91 hours 4.96 hours 27.1 hours