You connect two incandescent light bulbs in series and then connect them to a 110 V outlet. The specs of the light bulbs are 110 V 60 W and 110 V 100 W. What will be power consumption in this setup? Ignore the filament's resistance change due to temperature.
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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 resistanceA student connects two resistors with unknown resistance values in series, and notes that the equivalent resistance R = 790 0. She then connects the same two resistors in parallel, and measures the equivalent resistance to be Rp = 160 02. What are the resistances (in) of each resistor? smaller resistance larger resistance Q QThree 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 It
- When two identical resistors are connected in series to a 100 V voltage source, the current is measured to be 7 mA. Now suppose the resistors are connected to the voltage in parallel. Find the power supplied by the source. (in W) OA: 2.800 B: 4.060OC: 5.887 OD: 8.536 OE: 1.238×10¹ OF: 1.795×10¹ OG: 2.602×10¹ OH: 3.773x10¹Multiple-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 VThree resistors, R1 = 17.3, R2 = 13.2, R3 = 78, are connected in series across a 16.6 V battery. What is the voltage drop (in Volts) across R1?
- A 43-Ω resistor and a 28-Ω resistor are connected in series to a 12-V battery of negligible resistance.What is the voltage difference across each resistor? The value of v1 across a 43-Ω resistor is V. The value of v2 across a 28-Ω resistor is V.60 W 30 W Bulb A Bulb B V,-120V Vs-120V PA-60W Pa-30w Light bulb A has a power rating of 60 W when plugged into a 120 v outlet. Bulb B has a power rating of 30W when plugged into the same 120V outlet. Which of the following are correct statements? SELECT TWO ANSWERS a. Bulb A has twice the resistance of bulb B b. The following equation relates the current through each bulb la = 218 c. If both bulbs were turned on for 5 minutes bulb B would use twice the energy of bulb A O d. Bulb A has half the resistance of bulb BYou have a battery with a voltage of Vtotal = 25 V and two resistors, both with a resistance of R, = R, %3D 40 0. a. How can you connect the resistors to the battery (in series or parallel) in order to achieve the largest power dissipation? How much power is dissipated in this case?