The USB charger for a smartphone delivers 605.0 mA of current at 5.15 V while charging the phone. What is the power consumption of the smartphone while it is charging? W
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The USB charger for a smartphone delivers 605.0 mA of current at 5.15 V while charging the phone. What is the power consumption of the smartphone while it is charging?
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- 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 resistanceThe question is in the screenshot.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
- Q6/For the network of Figure beside a. Find the currents I and 16. b. Find the voltages V₁ and V5. Find the power delivered to the 6-k-ohm resistor. E = 28 V ₁ R₁ HI. 12 k R₂ 12 k 12 R₁3 k R₂ 940 R₂ 6k0 R10.4KCar batteries are usually rated in A*h (ampere*hours), which is a unit of charge. This rating tells us how much total charge the battery is capable of providing before it fails. The battery in Sam's new car is rated at 229 A*h. a) Determine the total charge that this battery is capable of providing. ____ C b) What maximum current does this battery provide in 31 minutes? ____ AMultiple-Concept Example 9 reviews the concepts that are important to this problem. A light bulb is wired in series with a 117-0 resistor, and they are connected across a 120.0-V source. The power delivered to the light bulb is 21.3 W. What is the resistance of the light bulb? There are two possible answers. Give the larger of the two. Light bulb R2 P V
- Your car's 31.8-W headlight and 2.50-kW starter are ordinarily connected in parallel in a 12.0-V system. What power would one headlight and the starter consume if connected in series to a 12.0-V battery? (Neglect any other resistor in the circuit and any change in resistance in the two devices. Give your answer to at least one decimal place.) WAn immersion heater used to boil water for a single cup of tea plugs into a 120 V outlet and is rated at 300 W.a. What is the resistance of the heater?b. Suppose your super-size, super-insulated tea mug contains 400 g of water at a temperature of 18°C. How long will this heater take to bring the water to a boil? You can ignore the energy needed to raise the temperature of the mug and the heater itself.If one wants to design a 1500 W electrical heater that consists of a resistor R with V = 208 V across it, what value should be chosen for R?