r connected in series with each other. The total circuit resistance must be reduced to a value of 1150-Ω. USing standard
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1. A circuit contains a 1000-Ω and a 300-Ω resistor connected in series with each other. The total circuit resistance must be reduced to a value of 1150-Ω. USing standard resistance values for 5% resistors discussed in Unit 5, explain how to change the present resistance value to the value desired.

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- 1. A 46.5-V battery and resistor 1, R₁ (21-0) and R₂ (93-) are connected in series. Calculate the equivalent resistance of the circuit. Reg: Ω Calculate the current through each resistor. A A 4:1 12: Calculate the voltage drop through each resistor. V V V₁: V₂: Hint: A diagram will be helpful.Answer the three following questions: A. Find the equivalent resistance of 12Ω, 25Ω and 42Ω connected in series. B. Find the equivalent resistance of three 30Ω light bulbs and two 20Ω heating elements connected in series. C. Find the equivalent resistance of two strings of Christmas tree lights connected in series, if the first string has eight 4Ω bulbs in series and the second has twelve 3Ω in series.5. A RC-circuit is composed of a resistor and capacitor linked to a battery. Derive the expression for the charging and discharging of a capacitor. Then, determine their respective currents for both charging and discharging. Plot the differences for cach scenario. What are the long term and short term behaviors?
- 26. Four resistors are connected to a battery as shown in the figure below, with ɛ = 15.0 V, R1 = 10.0 Ω, R2 - 20.0 Ω , R3- 40.0 Ω , and R4-30.0 Ω. %3D R2 R1 R4 AL R3 a) What is the equivalent resistance of the circuit? b) What is the potential (in volts) across each of the four resistors? c) What is the current across each of the four resistors?2. Three resistors, each with resistance R1, are in series in a circuit. They are replaced by one equivalent resistor, R. Comparing this resistor to the first resistor of the initial circuit, which of the following is true? A) The current through R equals the current through R1. B) The voltage across R equals the voltage across R1. C) The power given off by R equals the power given off by R1. D) R is less than R1. E) None of the above1. For the following, put all final answers in the +20V table below or sketch a similar table. а. Solve for the equivalent resistance of the circuit. Put your final answer in the table. 12 Q b. Solve for the voltage across and the 1Q 20 Q current through each resistor in the circuit. Fill in the table. Equivalent Resistance = Ω Resistor (2) ||AV| (V)| |I| (A) 1 5 12 20
- Can you answer problem 11? Can you also provide a short explanation for the answer you chose?The time constant in an RC circuit is the time it takes a. so that the current drops to zero. b. so that the current reaches its maximum value c. so that the capacitor is fully charged. d. in which the current decreases to 37% of its initial value.