A circuit consists of three identical lamps, each of resistance R, connected to a battery as in Figure P18.51. (a) Calculate an expression for the equivalent resistance of the circuit when the switch is open. Repeat the calculation when the switch is closed. (b) Write an expression for the power supplied by the battery when the switch is open. Repeat the calculation when the switch is closed. (c) Using the results already obtained, explain what happens to the brightness of the lamps when the switch is closed.FIGURE P18.51

Q: A circuit with a battery, a 8 Ω resistor, a 16 Ω resistor, and a 27 Ω resistor in series. The total…

A:

Q: Consider the circuit shown below where the battery has an emf of = 12.3 V, the resistors have the…

A: The capacitor is uncharged. Hennce, it will behave as short circuit at t=0. This will cause…

Q: The figure (Figure 1) shows a simplified circuit for a photographic flash unit. This circuit…

A:

Q: The circuit in the drawing contains five identical resistors. The 45-V battery delivers 79 W of…

A: Given: Potential Difference,V=45VPower,P=79W When the same amount of current passes through the…

Q: A charged capacitor is connected to a resistor and a switch as in the figure below. The circuit has…

A: Given that            The time constant of the circuit is (T) = 2.5s            The charge on the…

Q: Consider the circuit shown in the figure(Figure 1). Suppose the four resistors in this circuit have…

A: Kirchoff's current law : Kirchoff's current law states that the net current going inside a node will…

Q: 92 2452 3052

A: Power = I2 R Current I = V/R

Q: A circuit contains a 6.0-battery, a 4.0-0 resistor, a 0.60-pF capacitor, and a switch in series.…

A:

Q: power is dissipated

A:

Q: You set up a simple circuit by connecting two resistors in series with a battery. The resistance of…

A: Given data:  Two resistors are connected in series  R1 = 240 Ω R2 = 321 Ω Itotal = 0.28 A

Q: You are given a 49.5 V battery and two resistors of resistances 26 Ω and 94 Ω.? a)Find the current…

A: GivenV=49.5 VR1 =26 ΩR2 =94 Ω

Q: In the figure, the total resistance is 11.4 k, and the battery's emf is 29.8 V. If the time constant…

A: Resistance (R) = 11.4 kΩ Emf (V) = 29.8 V Time constant (?) = 29.8  μs

Q: You are given a 49.5 V battery and two resistors of resistances 22.5 Ω and 94 Ω. A. Find the power…

A:

Q: The cord from an appliance is too short to reach the wall outlet in your room. You have two…

A: Given:The resistance of the wire is 0.0240 Ω.The current is 4.20 A.Calculation:Write the expression…

Q: In the figure shown, the total resistance is 15.0 kΩ and the fem of the battery is 24.0 V. the time…

A: Given that the value of resistance and voltage and time constant. Then We have to determine the…

Q: 31. For the circuit shown in Fig- ure P23.31, find the current through and the potential differ-…

A: First calculations for the equivalent resistance-

Q: A charged capacitor is connected to a resistor and a switch as in the figure below. The circuit has…

A:

Q: Figure shows two circuits. The two batteries are identical and the four resistors all have exactly…

A: a) Points a, c and e are all at the same potential as the positive electrode on the battery. Points…

Q: A 1kV battery, a 3 kW resistor, and a 0.50-mF capacitor are connected in series with a switch. What…

A: Current in an RC circuit after two time constants

Q: What are the following exactly 7.00 s after the switch is closed?   (a) the charge on the capacitor…

A: [ As this question has more than 3 sub-parts and that's why I only provided solutions for first…

Q: Two of the three resistors shown are unknown but equal. Is the total resistance between points a and…

A: The three resistances are connected in series

Q: The drawing shows a circuit that contains a battery, two resistors, and a switch. What is the…

A: Voltage of the battery (V)=9.00 VR1=65.0 ΩR2=96.0 Ω

Q: The drawing shows a circuit that contains a battery, two resistors, and a switch. What is the…

A: Given Data, Voltage of the battery (V)=9.00 V R1=65.0 Ω R2=96.0 Ω

Q: A circuit is constructed with four resistors, one capacitor, one battery and a switch as shown. The…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: Consider the circuit shown in the diagram below. The battery has a voltage V = 12.0 V and the…

A:

Q: A student in the laboratory connects a 14 Ω resistor, a 23 Ω resistor, and a 33 Ω resistor in…

A:

Q: The diagram below depicts an RC circuit where C=6.15μ F, R0=20Ω, R1=22.5Ω, R2=25Ω, and V=5 Volts.…

A:

Q: An uncharged 5.0-µF capacitor and a resistor are connected in series to a 12-V battery and a open…

A:

Q: A student set up a simple circuit with an ohmic lightbulb, battery and switch. When the switch is…

A: Given: initial voltage = V1= 4.2 V initial current = I1= 527 mA voltage = V2= ? V Final current =…

Q: The periodic current shown is applied to a 1 kΩ resistor. Calculate the exact value of the average…

A: Given: To Calculate the exact value of the average power dissipated in the 1 kΩ resistor.

Q: student in the laboratory connects a 13 Ω resistor, a 24 Ω resistor, and a 38 Ω resistor in parallel…

A: Given Data: The value of resistance of resistors is R1 = 13 Ω. The value of resistance of resistors…

Q: Consider a circuit with an external voltage of ΔU = 3V in which two resistors, with R1 = 65Ω and R2…

A:

Q: Consider the circuit with R = 177 kQ and C = 477 pF. If the capacitor is initially uncharged, what…

A:

Q: In the circuit pictured, the resistors have values of R1 = 125 Ω, R2 = 120 Ω, and R3 = 148 Ω, and…

A:

Q: Problem 2: On a cold day a battery has a terminal voltage of V = 12.21 V and an internal resistance…

A: Here We have to use some basic formula