Suppose the electric company charges 2.6 cents per kW-h. How much does it cost to use a 125 watt lamp 4 hours a day for 30 days? Select one: a. 0.47 $ b. 1.87 $ c. None of the above d. 0.31 $ e. 0.39 $
Q: what is another form of the unit voltage? a. J times c b. N/C c. J/C d. V/m
A:
Q: New telephone lines must be installed to connect 8 cities (A, B, C, D, E, F, G, and H). Due to…
A:
Q: A coffee maker draws 6.5 amperes when operating at 120 V. How much electric power does it use. I…
A: Given that the coffee maker draws current I=6.5A and operates with a voltage V=120V We have to…
Q: Fill in the blanks where necessary. Then calculate the power consumed by the circuit. (HINT: All…
A:
Q: What is between points a andb when R =
A: Option C) 39.07 ohm
Q: What is the combined voltage of two 9V batteries connected in series? A. 4.5 V B. 9 V C. 1.5 V D. 18…
A: Option (D) 18 V Reason- connecting batteries in series adds the voltage of two batteries .
Q: What is the equivalent resistance between points A and B when R = 15.6 Q? 5R В R R 5R 4R Select one:…
A:
Q: Two 1.5 volt batteries in series gives you what? Select one: a. 1.5 volts with more current b. 1.5…
A: Given :Two 1.5 volts batteries Condition: connected in Series Required : Output If two 1.5 volt…
Q: 16. What is the power dissipated in Watts by the 9-ohm resistor? Write the answer in whole number.…
A:
Q: The electric power of a lamp that carries 2-A at 120-V is
A: electric power = Current x voltage electric power of a lamp = (2A) x (120V) electric power of a…
Q: 8. An operating 100.-watt lamp is connected to a 120-volt outlet. What is the total electrical…
A: Given data: Power (P) = 100 W Voltage (V) = 120 V Time (t) = 60 s Required: Total electrical energy…
Q: A 15.0 Q lightbulb is connected to a 12.0 V battery. What is the power of the bulb? Select one: О а.…
A:
Q: When plugged into a 120-Volt outlet, a light bulb consumes 300 joules of energy over a 5 second time…
A: Given: Voltage, V = 120 V Energy, E = 300 J time, t = 5 s
Q: . When switch S in the figure is open, the voltmeter V of the battery reads 3.13 V . When the switch…
A:
Q: If a lamp has a resistance of 120 W when it operates at 100 W, what current does it carry? a. 2.10…
A:
Q: How many kWh of energy does a 425 W toaster use if it is operated for 6.0 minutes? If energy costs…
A: GivenPower of toaster,P=425 Wtime of operation, t=6 min =6 min60…
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: 7. A 60W light bulb runs for 3 hours, how much electrical energy has it used?
A: Power = P = 60 W time = t = 3 hours = 3 x 3600 = 10800 s energy = E = ?
Q: An electric heater is constructed by applying a potential difference of 108.4V across a wire with a…
A: Given, Potential difference V = 108.4 V Resistance R =5 ohms We know the expression for power is…
Q: Voltmeter Ammeter A Resistor R DC power supply
A: A ciruit diagram is shown in the figure in which voltmeter is connected in series with the resistor…
Q: 67. You're estimating costs for a new power line with your compa- ny's financial group. Engineering…
A: Given resistance 50mohm/km Density of copper =8.9g/cm^3 Density of aluminum =2.7g/cm3 Cost of…
Q: A compact fluorescent lamp (CLF) uses less energy than its equivalent incandescent bulb. How much…
A:
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: A 120-watt light bulb has a resistance of 30 Ω. What current will run through the light bulb when it…
A: Given, P=120 W R =30 Ω We have to find the current that will run through the light bulb, when it…
Q: An electric heater is constructed by applying a potential difference of 110 V across a wire with a…
A:
Q: What is the potential difference between A and B for the circuit? Each battery is 2.00 volts а. 2.0…
A: When cells are connected in series the net potential difference across the battery is the sum of the…
Q: 2. Consider an electric circuit shown in Figure 2. 30 4Ω 62 ww- 82 Figure 2 a. If the current…
A:
Q: Charging a cellular phone for 2 hours usually requires 1,080 Joules. What is the power rating of the…
A:
Q: An electric heater is constructed by applying a potential difference of 99.6V across a wire with a…
A:
Q: 4. In Question 3, what is the current in amperes if the voltage is halved and the resistance is…
A:
Q: Fill in the blanks where necessary. Then calculate the power consumed by the circuit. (HINT: All…
A: Resistance 2 and 3 are parallel to each other, so their resultant is R23=R2R3R2+R3 the resultant is…
Q: 0) Answer in terms of V a. Use Ohm's Law to calculate the current through the entire circuit. b.…
A: Given resistances, R1 =8 k ohm =8000 ohmR2= 6 k ohm = 6000 ohm voltage applied V = V voltcurrent in…
Q: What is the power of your phone charger if its label reads it 120 V and 15 A?
A: Given Voltage V = 120 V Current I = 15 A
Q: If electric energy costs 12 cents per kwh, how many cents does it cost to keep a 1318 W toaster…
A:
Q: A heating element is to deliver 1.00 kw when operated on a 220 V circuit. The current flow when it…
A: Given thatA heating element is to deliver power, P=1KW=1000W when operated on a V=220V circuit.we…
Q: equires 1100 W at 110 V. What is the resistance of the heating coil? a. 7.5 W b. 9.0 W c. 10.0 W
A: GivenPower, P=1100 WVoltage,V=110 V
Q: The cost to operate a clothes dryer for a year is $80.25. If the rate for electrical energy is…
A:
Q: 1. The resistance of a 200-W light bulb, which is operated by a 110-V dc source, is about a) 60 2 b.…
A:
Q: 3. A CFL or compact fluorescent lamp uses less energy that its equivalent incandescent bulb. How…
A:
Q: 10.a. To provide a useful purpose, electrical energy is most often converted to A. heat, chemical…
A: Solution: 10.a electrical energy is most often converted to B. heat, light, or mechanical energy.…
Q: 2. A 350 W laptop is used daily for 9 hours in teaching. How many kWh are consumed by the laptop in…
A: Answer:- Given Power (P) = 350 W = (350)/(1000) = 0.35 kW Time taken for 9 hours in 30…
Q: he unit of electric current, the ampere, is equivalent to which of the following? a. V?Ω
A: The electric current is rate of change of charge.
Q: Four resistance are connected across an 24-V DC battery as shown in the figure. The current through…
A:
Q: . An electric water heater requires 1100 W of power. Electricity costs 8 cents per kilowatt hour.…
A: Given Power of an electric heater = P = 1100 W = 1.1 kW Cost of electricity = 8 cents/kWh We have to…
Q: An electric water heater consumes 6.88 kW for 2.35 h per day. What is the cost (in dollars per year)…
A: Given:The heater consumption of electricity is 6.88kW for 2.35 h per day.The cost of electricity is…
Step by step
Solved in 2 steps
