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- A. What is the effect on the current in a wire if the voltage is doubled and the resistance is halved? (Let Ohm's law guide your thinking. Let I0 be the initial current and I be the current after the voltage and the resistance are changed.) Express your answer using three significant figures I/I0= B. What is the effect on the current in a wire if the voltage is halved and the resistance is doubled? Express your answer using three significant figures. I/I0=a. You are given 5 resistors each of 400ohms resistance. Draw a suitable circuit connection to get an equivalent resistance of 800 ohms. b. Calculate the combined resistance of 10 resistors each of 100ohms connected in parallel.Consider the following circuit diagram. The potential difference across the battery is 40.0 volts, and it supplies a current of 5.00 amperes to the circuit. There is a current of of 2.70 amperes flowing through R1. Resistor R2 has a resistance of 5.50 ohms. What is the resistance of R3? Answer in ohms to two decimal places, but do not include units in your answer.
- Three resistors are connected in parallel. The resistances are each worth R1 = 2 ohms, R2 = 1 ohm and R3 = 2 ohms. If the resistance circuit is connected to a voltage of 12 volts, calculate the total current and the current flowing in the 1 ohm resistance. a. The magnitude of the total current = 14 A; current strength at R2 = 12 Ab. The magnitude of the total current = 24 A; current strength at R2 = 12 Ac. The magnitude of the total current = 18 A; current strength at R2 = 14 Ad. The magnitude of the total current = 20 A; current strength at R2 = 14 AOhm's law gives the relationship between voltage, resistance, and current in a simple circuit: V = IR. a) Find (dV/dt) in terms of I, R, (dI/dt) and (dR/dt). Assume all quantities are functions of time. b) We have a circuit with 500 Ω resistor, and we ramp up the voltage. How quickly is the current changing when we are increasing the voltage by 10 V/s? It will help to remember that t is the independant variable here. Include units, note that 1Ω = 1V/A. c) Is the current increasing or decreasing? How can you tell?A circuit with a battery, a 4 Ω resistor, a 15 Ω resistor, and a 22 Ω resistor in series. The total current is the system is 9.6 A. What is the voltage of the battery?
- A 17.7-ohm electric blanket, a 25.9-ohm TV, and a 36.8-ohm light bulb are connected in parallel. A difference in potential of 118 volts is applied to the combination.a. What is the equivalent resistance of the circuit? Include units in your answer. b. What is the total current in the circuit? Include units in your answer. c. What is the current through the electric blanket? Include units in your answerIn the circuit pictured, the resistors have values of R1 = 140 Ω, R2 = 143 Ω, and R3 = 141 Ω, and the battery has an emf ε = 259 V. A. Write an expression for the current through the battery. B. In amperes, how much current ibatt goes through the battery? C. Write an expression for the current through resistor 2. D. In amperes, what is the current i2 through resistor R2?Four resistors, �! = 100 Ω, �" = 250 Ω, �# = 350 Ω and �% = 200 Ω are connected such that theparallel combination of �! and �" is connected in series with the parallel combination of �# and �%. Theseries-parallel combination is then connected across a 24 V DC power supply.A. Draw the schematic diagram and label the circuit elements.B. Calculate the equivalent resistance of the circuit.C. Find the total current of the circuit, the voltage across each resistor and the current through each resistor.
- a. Draw a circuit with a battery and two identical light bulbs (same resistance) in series. Label all circuit elements and the current using the notation from Figures 1 and 2. b. If the battery voltage is 3V and the light bulb resistance is 150, what is the voltage drop across each of the light bulbs? What is the current going through each bulb?A 217-ohm lamp, a 124-ohm lamp, and a 323-ohm lamp are connected in series and placed across a potential difference of 87.1 volts.a. What is the equivalent resistance of the circuit? Include units in your answer b. What is the current through the 217-ohm lamp? Include units in your answer.5.00 120 V 6.00 3110 4.00 8.00 1 2 A. The total currenț through the circuit is B. The voltage across the 8 Ohms resistor is V. C. The power is dissipated in the 5 Ohms resistor is W. Input all answers as whole numbers. A.