A typical cost for electrical power is $0.120 per kilowatthour. Some people leave their porch light on all the time. What isthe yearly cost to keep a 75 W bulb burning day and night?
Q: Calculate the rate of the flashlight’s energy consumption. Suppose a flashlight has 6.8 × 102 C…
A: Given data: Charge (q) = 6.8×102 C Time (t) = 0.35 h Voltage (V) = 3.00 V Required: Power (P)
Q: Electrical energy is converted to heat at the rate of 7.56kJ/min in a resistor which has 270 C/min…
A: Given: The rate of heat energy across the resistor is 7.56 kJ/min. The rate of the charge is 270…
Q: The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value.…
A: Given, Electricity cost = 0.12$/kWh And power P=Et So, E=P.t a) Power = 40W total time, t =7days=…
Q: A 50.7 ohm resistor is put into a circuit with a 16 volt battery. What is the power dissipated (in…
A:
Q: The big mall near Sally and Amy's city has extended their operating hours to accommodate the huge…
A: power of each headlight =43.0 W car battery V=12.0 volts rated Q=92.0 A.h
Q: How many kW.h of energy will a 400 W television set use in one month, if it is turned on for an…
A:
Q: The newest generation of smartphone uses three different batteries connected in series…
A: When cells are linked in series to make a battery, the net potential difference between the…
Q: 5. A 100 W light bulb is left on for 100.0 hours. The cost per kwh is $0.20. Over this period of…
A:
Q: The power supplied to a typical black-and-white television is 90.0 W when the set is connected…
A:
Q: The generator at a large power plant has an output of 1,400,000 kW at 28,000 V. (a) If it were a DC…
A: Given data: The power is P=1400000 kW The potential is V=28000 V Calculating the current as…
Q: The cost of energy delivered to residences by electrical transmission varies from $0.070/kWh to…
A: Given data : The cost of energy delivered to residences by electrical transmission varies from…
Q: Your cellphone typically consumes 400mW of power while used t text. If the phone is operated using a…
A: Ohm's law defines a linear relationship between voltage and the current of the circuit. The…
Q: Assuming 95.0% efficiency for the conversion of electrical power by the motor, what current must the…
A: Given Efficiency η=95% Voltage V=12 V Mass m=828 kg (a) The required power is,…
Q: The cost of electricity varies widely throughout the United States; $0.120/kWh is a typical value.…
A: Electricity cost = $0.120 /kWh
Q: A 9 V battery costs $1.49, and will run a portable CD player for 6 hours. Suppose the battery…
A: The objective of the question is to calculate the cost of the energy in dollars per kilowatt-hour…
Q: A 5.5-kW water heater operates at 240 V. Should the heater circuit have a 20A or a 30A circuit…
A:
Q: A water pump draws about 3.8A when connected to 240 V. What is the cost (with electrical energy at 9…
A: Given:current, I= 3.8 AVoltage, V=240 VRate of electrical energy= 9 cents per kWhTotal time, t=10 h
Q: One day on a particularly stormy night, a science student is watching the rain and thinking about…
A: Given: The charge is 21 V. The potential difference is 15050 V.
Q: H 3a 6v R timing 412 Im 8 1. 5a 12V FIND: V, I, & R
A: For solving complex circuits we use two important laws, 1) Kirchhoff's Current law(KCL) 2)…
Q: A 1750 W radiant heater is constructed to operate at 120 V. What is the current in the heater when…
A:
Q: What is the maximum voltage, in V, that a 30 Ohm light bulb can handle if it is rated for 60 W?
A: Resistance = 30 ohm Power rating of light bulb = 60 Watt Formula used , Power = Voltage2/R
Q: An immersion heater has a resistance of 5.0 ohms while drawing a current of 3.0 ampheres. What is…
A: Given data -The Resistance of the immersion heater is given as .The current drawn is given as I = 3…
Q: An electric water heater is designed to produce 48 kWkW of heat when it is connected to a 240-V…
A:
Q: How much energy does a toaster use if it is rated at 1200 W and runs current for 2 minutes as it…
A:
A typical cost for electrical power is $0.120 per kilowatthour. Some people leave their porch light on all the time. What is
the yearly cost to keep a 75 W bulb burning day and night?
Step by step
Solved in 2 steps
- A 802.73 watt generator can produce a current of 17.12 amps through a circuit. What is the total voltage across the circuit?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 =A turbine of a coal burning installation delivers 1,500 hp of mechanical energy to a generator. The generator then converts 80.0% of the mechanical energy into electrical energy. If the terminal potential difference of the generator is 2350 V, what current does it deliver (in A)?
- need to check this,,With a 1200 W toaster, how much does it cost to make a slice of toast (cooking time = 1.5 minute)? Electricity costs 8 cents per kW.h. centsA 1⁄2 hp motor draws a current of 4.0 A from a 120-V line. (a) Calculate the electric power used by the motor. (b) Calculate the motor’s efficiency – that is, the work it does per unit time divided by the electrical power it uses.
- A 5.5 A current is set up in a circuit for 6.2 min by a rechargeable battery with a 9.0 V emf. By how much is the chemical energy of the battery reduced?An alternative to CFL bulbs and incandescent bulbs are light-emitting diode (LED) bulbs. A 100-W incandescent bulb can be replaced by a 16-W LED bulb.Both produce 1600 lumens of light. Assuming the cost of electricity is $0.10 per kilowatt-hour, how much does it cost to run the bulb for one year if it runs for four hours a day?