Brightness depends on power output of bulb( VxI).
Problem 3.1 A. In the circuit at right, use your model for electric current to rank...
Problem 3: Consider the following circuit. Assume that each of the three light bulbs has the same resistance. switch a) Before the switch is thrown, rank the brightness of bulbs A, B, and C. Explain your reasoning. b) After the switch is thrown, rank the brightness of bulbs A, B, and C. Explain your reasoning.
Rank the brightness of the bulbs. Then rank the current.
DO NOT USE FORMULAS. just use basic ideas.
A. Identical bulbs are connected to identical batteries in the various circuits above. Use your model and previous observations to rank all the bulbs in order by brightness. If two bulbs are the same brightness, state that explicitly. B. Rank the circuits according to the current through the battery.
A simple series circuit consists of three identical bulbs, a
battery, and a wire with a switch as shown in the diagram. When the
switch is open, all three bulbs glow with the same brightness. Then
the switch is closed. When the switch is closed, the brightness of
bulb A (increased, decreased, remained the same), and the current
through the battery (increased, decreased, remained the same).
Pick the right answer and explain your
reasons.
Switch
1. A student observes the relative brightness of bulbs A and B with the switch both open and closed. She finds the following: <(6 Switch open: Bulbs A and B have same brightness. Switch closed: Bulb A is brighter than when the switch was open; Bulb B does not light at all. a. With the switch closed, does current divide and recombine at the junctions? Does it divide evenly or unevenly? Explain. b. When the switch is closed, does the...
Use the model for electric current to rank the networks shown below in order by resistance. Explain your reasoning. (b) If a battery were connected to each of the circuits, in which case would the current through the batteiy be the largest? The smallest? Explain your reasoning.
explain pls!
B. Suppose that a bulb, bulb 12, were added to circuit VIII as shown. 12 1. Predict whether the brightness of bulb 11 in circuit IX will increase, decrease, or remain the same when the switch is closed. Explain. A 3 11 B Circuit IX 2. Predict the ranking of the bulbs according to brightness, from brightest to dimmest, while the switch is closed. If any bulbs will have the same brightness or will not light, state so...
A circuit is constructed as shown above. There are four voltage sources as labeled each with given voltage V_1 or V_2 as shown. Assume that V_1 > V_2. Assume each bulb can be modeled as an identical resistors of resistance R, same as each resistor. (a): Assume that both switches are open as shown. In terms of the parameters given, calculate the current though Bulb B. Explain your work. (b): Assume that both switches are open as shown. In terms...
B E 6. Five identical lightbulbs are connected to a battery as shown above. a. Rank the brightness of the bulbs and explain your reasoning. b. If bulbs C and D are removed from the circuit as shown below, will the brightness of bulb A increase, decrease, or stay the same? Explain your reasoning. A c. If bulbs C and D are removed from the circuit as shown above, will the brightness of bulb B increase, decrease, or stay the...
Problem 4: Bulbs A and Cuse 40 W of power when conmected to a 120VE standard 120-volt outler. BulbsB and D use 60 W uhen Bulbs A and C connected directly to voltage source. to a standard outlet. A student connects bulhs A and B in series to a standard outlet and bulbs C and D in parallel to a standard ouclet as shown Series circuit 6o w Bulbs B and D connected directly to voltage source. Parallel circuit (a)...