If an iron takes 660KJ of energy from the mains supply after being left on for 10 minutes, what is the power rating of the iron? a) In Watts b) In kW
Q: A student keeps his 9.0 V, 9.7 W radio turned on at full volume from 6:00 p.m. until 5:00 a.m. How…
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Q: Compare the energy consumption of two commonly used items in the household. Calculate the energy…
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Q: A student keeps his 9.0 V, 8.3 W radio turned on at full volume from 5:00p.m. until 3:00 a.m. How…
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Q: A certain brand of hotdog cooker works by applying a potential difference of 137 V across opposite…
A: Given : potential difference = 137 V Current I= 10.9A Energy required to cook 1 hotdog = 61.0…
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Q: A 420 W vacuum cleaner is designed to operate at 120 V. What current does it draw? O3.5 A O3.0 A…
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Q: A 36 Ω component is connected to a 12 V battery. How much energy is expended per second? W
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Q: A typical cost for electric power is $ 0.135 per kilowatt-hour. (a) Some people leave their porch…
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Q: A 2.5 kW heater element from a dryer has a length of 59 cm. If a 12 cm section is removed, what…
A: Given values:Power of heater element, P = 2.5 KwInitial length of dryer, Li = 59 cm = 0.59 mFinal…
Q: The heating element in an iron has a resistance 360. The iron is plugged into a 120-V outlet. What…
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Q: You are given a number of 16 Ω resistors, each capable of dissipating only 2.0 W without being…
A: In this question we are given with a number of 16 Ω resistors, each capable of dissipating only 2.0…
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A: Given., Thermal energy is generated W = 177 J For time t = 7.69 Voltage V = 12 V We know the…
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- Referring to the given figure where V= 6 V, use source transformation to determine the current and power absorbed by the 8-0 resistor. 82 ww ЗА 10Ω The current absorbed by the 8-S resistor is The power absorbed by the 8-N resistor is A. W. ww12.a. For grounded systems, equipment grounding and bonding performance requirements are set forth inwhich article of the National Electrical Code?A. 840.100B. 490.55C. 250.4(A)D. 680.42(B)12.b. A crane is operating in a Class III environment. Which of the following types of grounding systemshould be used?A. The power supply to the crane should be grounded, but the crane should be ungrounded.B. Both the crane and the power supply should be grounded.C. Neither the crane nor the power supply should be grounded.D. The crane should be grounded, but the power supplied to the crane should be ungroundedCompare the energy consumption of two commonly used items in the household. Calculate the energy used by a 1.00 kW toaster oven, W toaster, which is used for 5.80 minutes, and then calculate the amount of energy that an 11.0 W compact fluorescent light (CFL) bulb, Wight, uses when left on for 10.50 hours. W toaster = kWh Wlight = kWh
- A 1100 W toaster takes one minute to toast a slice of bread. At 9.0 cents/(kW-h), how much does the toast cost? cost: cents Question Credit: OpenStax College PhysicsThe periodic current shown is applied to a 1 kΩ resistor. Calculate the exact value of the average power dissipated in the1 kΩ resistor.Suppose you leave a 50 W bulb on for a month. Approximately how much will you pay for using that much energy? (Assume that electricity is charged at a rate of $0.10/(kW hour).) A) 3 cents B) 30 cents C) 3 dollars D) 30 dollars E) 300 dollars
- A student keeps his 9.0 V, 5.3 W radio turned on at full volume from 8:00 p.m. until 4:00 a.m. How much charge went through it? Number i UnitsYou get home from work and make the same meal everyday for a year. Vegetables and meat baked in a casserole dish. You cook your meal at 350 F for 60 mins. This uses about 2.5kWh of electricity. What will it cost you to cook your dinners for a year if your utility charges you 5.5 cents per kWh?Two lightbulbs both operate on separate 120 V sources. One has a power of 40 W and the other is 80 W. Which of the following is true? o a. they have the same current flowing o b. the 80 w bulb has more current flowing O c. the 40 W bulb has a lower resistance o d. they have the same resistance
- The 10 resistor in (Figure 1) is dissipating 35 W of power. Figure ww -ww 10 (2 5.0 92 ww 20 (2 1 of 1 How much power is the 5.0 2 resistor dissipating? Express your answer with the appropriate units. Pso = Submit ▾ Part B μA P20 = Value Submit X Incorrect; Try Again; 5 attempts remaining Previous Answers Request Answer How much power is the 20 S2 resistor dissipating? Express your answer with the appropriate units. Units HA Value [w] < Return to Assignment Units Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining Provide Feedback ?Compare the energy consumption of two commonly used items in the household. Calculate the energy used by a 1.00 kW toaster oven, Wtoaster , which is used for 5.20 minutes, and then calculate the amount of energy that an 11.0 W compact fluorescent light (CFL) bulb, Wight, uses when left on for 9.00 hours. kWh Wtoaster kWh Wight =Referring to the given figure where V= 21 V, use source transformation to determine the current and power absorbed by the 8-0 resistor. 32 ww 82 3 A 102 The current absorbed by the 8-0 resistor is The power absorbed by the 8-0 resistor is A. W. ww