When a 220 Volt potential difference is applied to a heater with a resistance of 20 Ω; a) The power of the heater? b) The energy consumed when working for 12 hours and when the kW-hour of electricity is 30 kuruş, the heater is How many TL invoices will the work reveal?
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When a 220 Volt potential difference is applied to a heater with a resistance of 20 Ω;
a) The power of the heater?
b) The energy consumed when working for 12 hours and when the kW-hour of electricity is 30 kuruş, the heater is
How many TL invoices will the work reveal?
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- Cell phone batteries are rated in units of mAh, or milliampere-hours. (a) What quantity does a mAh measure? energycharge currentpower (b) Consider a particular phone that has a battery rated at 4,000 mAh. The battery operates at a potential difference of 4.00 V.How much energy, in units of kilowatt-hours, is stored in a fully charged battery? kWh (c) If electricity costs $0.16 (or 16.0 cents) per kilowatt-hour, what is the value of the total amount of energy stored in this battery? Express your answer in cents (or 0.01 of a dollar). ¢ (d) When the phone is idle (that is, turned on but not making calls or texts, using GPS, or running any power-hungry apps), it will operate continuously for 32.2 hours from a fully charged battery, until the battery runs out. How much average current does the phone draw while idle? Express your answer in milliamperes. mAF2 A 100 W lightbulb is plugged into a standard 120 V outlet. (a) How much does it cost in dollars per 31-day month to leave the light turned on continuously? Assume electrical energy costs US$ 0.06/kWh. (b) What is the resistance of the bulb? (c) What is the current in the bulb? (a) Number W S (b) Number i (c) Number i eTextbook and Media Hint Save for Later #3 ‒‒ Q Search F3 E D F4 $ 4 -- R F5 % 5 F Units Units Units -X: + F6 V (O DE & 7 6 UL G B H FB FO * 8 Attempts: unlimited Submit Answer F9 - N F10 DHE K M OAn appliance is connected to a 120 V line. The appliance has a At The "low" sething, the appliance daws 5 A. The "high" "low" and high" high power seting "high" sething is double the low sething. Find he following values: at Lower Sething Higher Setting at Resis tance 2. Power Output 2.
- MehulThe current in the figure below is 0.59 A. (Let the internal resistance of battery 1 be r₁ = 1.5 2 and the internal resistance of battery 2 be r₂ = 1.2 02.) 6.0 V 9.0 V ww ww Battery 1 a (a) Find the voltage drop Vab. (b) Find the power dissipated in R. (c) Find the useful electric power supplied by battery 2. (Note: Do not forget the internal resistance of battery 2.) (d) Find the rate at which chemical energy is stored in battery 1. (Note: Do not include power dissipated in the internal resistor of battery 1 in your answer.) www R Battery 2 bIf your cell phone has a battery that can hold X milliampere-hours of charge, how long will the phone continuously operate if it draws 3.5 volts? If necessary, realistically estimate the wattage at which your phone operates – cite any references you use. Show your calculations.
- All of the electrical outlets in a room are connected in a single parallel circuit. The circuit is equipped with a 20-A fuse, and the voltage is V = 120 V. (a) What is the maximum total power that can be supplied by the outlets without blowing the fuse? W(b) How many 2,000-W appliances can be plugged into the sockets without blowing the fuse? appliance(s)In the circuit shown, the rate at which R1 dissipating electrical energy is 20W. (a) find R1 and R2. (b) what is the emf of the battery? (c) find the current through both R2 and the 10Ω resistor. (d) calculate the total electrical power consumption in all the resistors and the electrical power delivered by the battery.A simple ohmmeter is made by connecting a 2.50 V battery in series with a resistance R and an ammeter that reads from 0 to 1.00 mA, as shown in the figure. Resistance R is adjusted so that when the clip leads are shorted together, the meter deflects to its full-scale value of 1.00 mA. If the ammeter has a resistance of 15.6 Q and the internal resistance of the battery is negligible, what is the value of R? &f= (0-1.00) \ mA www
- . A resistor operated at 120 V DC is rated at 1.40 kW. a) What is the normal operating current through the resistor? b) What is the resistance of the resistor?A certain medical device has a resistance of 2 kilo-Ohm and is rated for 20 Watts. What is the maximum voltage, in V, it can safely handle?sia papa and surpres Combip a ant The 45-5 Lattery delivers 71w of power to the circuit. What is the resistance 2 of each resistor ? Ri J+ 45V ry. ww sy.