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- A toaster, a speaker, and a lamp are each plugged in parallel into a 110 V outlet with a 20 A fuse. a.) If the toaster draws 1500 Watts of power, the speaker draws 900 Watts of power, and the lamp draws 60 Watts of power, what current is drawn by each device? b.) Will this combination blow the fuse? Why or why not?A toaster is rated at 520 W when connected to a 110-V source. What current does the toaster carry? What is its resistance? ΩAn amplifier in a portable speaker is connected to a 15 V battery and has a resistance of 8.0 Ω.What is the power used by the amplifier?
- An 86-Ω resistor and a 50-Ω resistor are connected in series across a battery. The voltage across the 86-Ω resistor is 24 V. What is the voltage across the 50-Ω resistor?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 resistance of an electric heater is 90 Ω when connected to 120 V. How much energy does it use during 20 min of operation?
- Three identical 100.0-W, 120-V lightbulbs are connected across a 120-V power source as shown in in the figure below. Assume that the resistance of each bulb is constant (even though in reality the resistance increases markedly with current). 120 V R₁ R₂ (a) Find the total power supplied by the power source. W = (b) Find the potential difference across each lightbulb. AV₁ AV₂ = AV₂ = Need Help? Read It R₂ V Master ItA student in the laboratory connects a 17 Ω resistor, a 26 Ω resistor, and a 34 Ω resistor in parallel and then connects the arrangement to a 46 V dc source. (a) What is the current? A(b) What is the power? WThe resistance of a bagel toaster is 11 Ω. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster?