The power supplied to a typical black-and-white television set is 90 W when the set is connected to 120 V. (a) How much electrical energy does this set consume in 1 hour? (b) A color television set draws about 2.5 A when connected to 120 V. How much time is required for it to consume the same energy as the black-and- white model consumes in 1 hour?

A 9 W led lightbulb emits the same light as a 60 W standard lightbulb. If a power company charges 10 cents per kW.h, then how much money do you save by using the led lightbulb instead of the standard lightbulb for 30 days?

consume in 1 hour? J (b) A color television set draws about 2.6 A when connected to 120 V. How much time is required for it to consume the same energy as the black-and-white model consumes in 1 hour?

In the evening, the student turns on a 38-W table lamp, plugs in a 167-W computer to study physics, and uses a 501-W coffee maker to make some hot coffee to keep awake. What is the overall current in this student's room, in Ampere?

In the figure ℰ1 = 3.22 V, ℰ2 = 0.927 V, R1 = 3.89 Ω, R2 = 2.23 Ω, R3 = 3.65 Ω, and both batteries are ideal. What is the rate at which energy is dissipated in (a) R1, (b) R2, and (c) R3? What is the power of (d) battery 1 and (e) battery 2?

The generator at a large power plant has an output of 2,000,000 kW at 23,000 V. (a) If it were a DC generator, what would be the current in it? A (b) What is its energy output each day-in joules and in kilowatt-hours? kWh (c) If this energy is sold at a price of 10 cents per kilowatt-hour, how much revenue does the power plant generate each day? %24 Need Help? Road It Watch It

Lightbulb A is marked "10.0 W 120 V," and lightbulb B is marked "60.0 W 120 V." These labels mean that each lightbulb has its respective power delivered to it when it is connected to a constant 120-V source. (a) In what time interval does 1.60 J pass into lightbulb A?(b) By what mechanisms does this energy enter and exit the lightbulb? Explain.   (c) Find the cost of running lightbulb A continuously for 30.0 days, assuming the electric company sells its product at $0.110 per kWh.

A resistor composed of carbon =(p=3.5*10^5 Ω*m) having a radius of 1.2mm and a length of 3.1mm is connected to a 6V batter. How much energy is dissipated by the resistor in 5 minutes?

A 120 volt household circuit has a 360-Watt blender and a 30ohms light connected to the source in parallel: A) How much current (amps) must the source provide? B) How much power (Watts) is used in the 30ohms light?

What is the maximum power in W that can be generated from an 18 V emf using any combination of a 6.0 Q resistor, and 9.0 Q resistor?