A television set connected to a 120 V outlet consumes 35 W of power. Part A How much current flows through the television? Express your answer using two significant figures. VE] ΑΣΦ I = Submit Part B At = Request Answer Submit How long does it take for 10 million electrons to pass through the TV? Express your answer using two significant figures. ΑΣΦ BWIC ? Request Answer SWIC A ? S

A television set connected to a 120 V outlet consumes 35 W of power. Part A How much current flows through the television? Express your answer using two significant figures. VE] ΑΣΦ I = Submit Part B At = Request Answer Submit How long does it take for 10 million electrons to pass through the TV? Express your answer using two significant figures. ΑΣΦ BWIC ? Request Answer SWIC A ? S

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter20: Electric Current, Resistance, And Ohm's Law

Section: Chapter Questions

Problem 60PE: Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a...

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If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
Unreasonable Results (a) What current is needed to transmit 1.00 102 MW of power at 10.0kV? (b) Find the resistance of 1.00 km of wire that would cause a 0.0100% power loss. (c) What is the diameter of a 1.00-km-long copper wire having this resistance? (d) What is unreasonable about these results? (e) Which assumptions are unreasonable, or which premises are inconsistent?
If electrical energy costs 0.12 per kilowatt-hour, how much does it cost to (a) burn a 100-W lightbulb for 24 h? (b) Operate an electric oven for 5.0 h if it carries a current of 20.0 A at 220 V?
Integrated Concepts (a) What energy is dissipated by a lightning bolt having a 20,000-A current, a voltage of 1.00102 MV, and a length of 1.00 ms? (b) What mass of tree sap could be raised from 18.0°C to its boiling point and then evaporated by this energy, assuming sap has the same thermal characteristics as water?
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Number 12 copper wire (diameter 0.08080 inch) used for electrical installations in homes. What is the voltage drop in 50 m of #12 copper wire if it carries a current of 6.0 A? How many electrons pass through the copper wire per second (e = 1.6 x 10-19 C)? (The resistivity of copper is 1.7 x 10-8 2-m.) %3D
An electric device delivers a current of 5 A for 10 seconds. How many electrons (1.6x10-19 C) flow through this device?