SwitciA circuit shows four identical bulbs and a switch connected to an ideal battery. The switch is initially open.The battery in the circuit has a voltage of 12 V. When the switch is open, a student attaches a voltmeteracross each of the bulbs. What are the readings she obtains on her meter?Bulb A:Bulb B:Bulb C:Bulb D:Explain your reasoning. The switch is now closed.SwitclDoes the voltage of the battery increase, decrease, or remain the same?Explain your reasoning.

We are given four identical bulbs.identical means they have same resistance.connected to a ideal…

Answered: Switc A circuit shows four identical…

University Physics Volume 2

18th Edition

ISBN:9781938168161

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Chapter10: Direct-current Circuits

Section: Chapter Questions

Problem 77AP: Consider the circuit shown below. The terminal voltages of the batteries are shown, (a) Find the...

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Consider the circuit shown below. The terminal voltages of the batteries are shown, (a) Find the equivalent resistance of the circuit and the current out of the battery, (b) Find the current through each resistor, (c) Find the potential drop across each resistor, (d) Find the power dissipated by each resistor, (e) Find the total power supplied by the batteries.
A photoresistor, whose resistance decreases with light intensity, is connected in the circuit of the figure. On a sunny day, the photoresistor has a resistance of 0.58 kΩ . On a cloudy day, the resistance rises to 4.4 kΩ . At night, the resistance is 22 kΩ . (Figure 1) Part A: What does the voltmeter read on a sunny day? Express your answer with the appropriate units. Part B: What does the voltmeter read on a cloudy day? Express your answer with the appropriate units Part C: What does the voltmeter read at night? Express your answer with the appropriate units. Part D: Does the voltmeter reading increase or decrease as the light intensity increases? The voltmeter reading increases because the current through the resistor decreases. The voltmeter reading decreases because the current through the resistor increases. The voltmeter reading decreases because the current through the resistor decreases. The voltmeter reading increases because the current through the resistor…
Consider the circuit shown in the figure(Figure 1). Suppose the four resistors in this circuit have the values R1= 13 Ω, R2= 6.4 Ω, R3= 6.3 Ω, and R4= 14 Ω, and that the emf of the battery is E= 18 V. Part A: Find the current through each resistor using the rules for series and parallel resistors. Part B: Find the current through each resistor using Kirchhoff's rules.
In the circuit shown, two identical 1.5 V batteries (with the positive or high potential ends colored orange) are connected to three identical bulbs, A, B, and C. The current in bulb A is I0.A. What is the current in bulb B? Express your answer as a number multiplied by I0, and enter that number here: _____ × I0B. What is the current in bulb C? Express your answer as a number multiplied by I0, and enter that number here: _____× I0Suppose that each of the bulbs has a resistance of 50 Ω.C. Calculate I0, the current in bulb A.I0 = _______ amps
Consider the circuit shown in the figure(Figure 1). Suppose the four resistors in this circuit have the values R1= 13 Ω , R2 = 7.2 Ω , R3 = 6.3 Ω , and R4 = 10 Ω , and that the emf of the battery is E = 15 V .
In the circuit shown in figure 1, all the resistors are rated a maximum power of 1.00 W. What is the maximum emf epsilon that the battery can have without burning up any of the resistors?
Consider a simple circuit consisting of a battery, a closed switch, and a resistor. The voltage across the battery is 1.72 V, and the current through the resistor is 3.93 A. If the resistor is a cylindrical resistor of length 0.06 m made of a material with resistivity of 5.6x10-6 ohm-meters, what is the cross-sectional area of the resistor element? Your answer should be in m2.
Suppose you have a circuit in which you have connected 3 batteries, each of which that has voltage of 2.8V, in series with each other such that the positive terminal of one battery is connected to the negative terminal of the next (and so on), what is the resulting voltage? Note: It is understood that the unit of your answer is in Joules (J), however do not explicitly include units in your answer. Enter only a number.
A battery with an unknown electromotive force Ɛ and an unknown internal resistance R? was used to power a single resistor R = 6 Ω and two of the same resistors connected in parallel (see the adjacent figure). In the first case, the voltmeter showed the absolute value of the voltage difference V1 = 10V, and in the second, V2 = 8VCalculate the electromotive force Ɛi and the internal resistance of the battery, R?.
A resistor is dissipating 119milliwatts [mW] of power. The voltage across the resistor is 26 volts [V]. (a) What is the value of the resistance? Express your answer in units of ohms[Ω]using an appropriate SI prefix such that there are only one, two, or three digits shown to the left of the decimal. (b) What is the current through the resistor? Express your answer in units of amperes [A] using an appropriate SI prefix such that there are only one, two, or three digits shown to the left of the decimal.
Th diagram at the right shows three identical light bulbs wired in series. Several points along the circuit are labeled with letters. Compare the electric potential and the electric potential energy of the various points. For each comparison, use a greater than (>), less than (<), or approximately equal to (=) symbol. Electric Potential Comparison Potential Energy Comparison VA ____ VB PEA ____ PE B VB ____ VC PE B ____ PE C VC ____ VD PE C ____ PE D VD ____ VE PE D ____ PE E VE ____ VF PE E ____ PE F VF ____ VG PE F ____ PE G VG ____ VH PE G ____ PE H VH ____ VA PE H ____ PE A
A resistor is dissipating 114 milliwatts [mW] of power. The voltage across the resistor is 13 volts [V]. (a) What is the value of the resistance? Express your answer in units of ohms [Ω] using an appropriate SI prefix such that there are only one, two, or three digits shown to the left of the decimal. (b) What is the current through the resistor? Express your answer in units of amperes [A] using an appropriate SI prefix such that there are only one, two, or three digits shown to the left of the decimal.

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