DC Circuits 2.00 N 4. You are helping to design a simple circuit for an experiment. The circuit so far is shown to the right. + а. What is the equivalent resistance of the circuit? 3.00 0 1.00 N Please state this as an amount of Ohms to three significant digits. 4.00 N Req The experiment requires that the power dissipated by the 3.002 resistor be exactly 60.0W. Determine what the battery's voltage should be in order for this to happen. That is, determine the battery's voltage ɛ such that the 3.000 resistor losses energy at 60.0W. Please state this as a voltage to three significant figures. b.

Consider following circuit with R1 = 62 Ω, R2 = 11 Ω, R3 = 62 / 10 Ω, R4 = 11/10 Ω and and ξ=11 V a. Calculate the equivalent resistance of the circuit?b. Calculate the current through the battery? c. Write Kirchhoff’s potential difference rule for left loop d. Write Kirchhoff’s potential difference rule for right loop e. Calculate currents i1 , i2  and i3 ? f. Calculate the potential difference of R2 ? g. Calculate the potential difference of R3 ? h. Calculate the heat dissipation of R2 resistor  i. Cross sections through two long conductors of the same length and material, with square crosssections of edge lengths are shown below. Conductor Y fits snugly within conductor X, Rank theresistance of X and Y?

Tina the ballarina has this RC circuit she made for school help her figure out the following a. What is the time constant for the RC circuit? b. After how long does the capacitor become 80% charged? c. How much current flows in the R3 resistor at this time? + S I R₁ R₂ C R3 www.h R₁=100 kn R₁-200 kn R₂=300kn C=5.00 μF {=9.00V THE CAPACITOR IS INNITIALY CHARGED WHEN THE SWITCH IS CLOSED

Consider the circuit below. Assume that the capacitor is initially uncharged. V₁=24 V R = 10 ΚΩ : R2 = 30 ΚΩ www Description of Image a. What is the initial current through resistor R₂ when the switch is closed (t = 0)? Current through R₂ at t = 0 is 8 O = 0.8 mA. Hint O O O C₁ = 10 μF b. What is the current through resistor R₂ when the capacitor is fully charged, long after the switch is closed (t→ ∞)? Current through R₂ as t→∞ is 6 O = 0.6 mA. c. What happens if the switch is opened after it has been closed for some time? Choose the most correct statement below. Current flows through C₁ but not R₁ or R₂. Current flows through V₁, R₁, R2, and C₁. Current flows through R₁ and C₁ but not R₂. No current flows anywhere in the circuit. Current flows through C₁ and R₂ but not R₁. Current flows through R₁ and C₁ but not R₂. X In time t = initial value. d. If the switch has been closed for a time period long enough for the capacitor to become fully charged, and then the switch is opened, how…