quiz7

  1. See the circuit below.  Write out the Kirchhoff loop rule equation for the loop from abdfeca. Keep track of signs for the direction I have indicated.

     













     

    a) +15V-6*I(1)-9*I(5)-2.4*I(3)-6I(1)=0
    b) +15V+6*I(1)-9*I(5)-2.4*I(3)+6I(1)=0
    c) -15V+6*I(1)+9*I(5)+2.4*I(3)-6I(1)=0
    d) -15V+6*I(1)+9*I(5)+2.4*I(3)+6I(1)=0
    e) -15V+6*I(1)-9*I(5)+2.4*I(3)+6I(1)=0
    No answer given yet
  2. Given the circuit in problem 1 what is the magnitude of the electric potential drop across the resistor from c to d? NOTE: THIS LOOP CAN BE REDRAWN TO FIND EQUIVALENT TOTAL RESISTANCE USING ONLY SERIES AND PARALLEL RULES (NOT KIRCHHOFF RULES).
    a) 3.00Volts
    b) 15.0Volts
    c) 6.00Volts
    d) 0.50Volts
    e) 0.00Volts
    No answer given yet
  3. Form a circuit by placing a 1.5Volt battery in series with a 51.0 kilo-Ohm resistor and then in series with a 1000 micro-Farad capacitor. The capacitor starts charging at t=0 when the last connection is made. After 51 seconds, what is the size of the voltage drop across the capacitor, the voltage drop across the resistor, and the current through the resistor?
    a) 0.948Volts, 0.552 Volts, 1.08E-2 A
    b) 0.948Volts, 0.552Volts, 1.08E-5 A
    c) 0.552Volts, 0.948Volts, 0.00 A
    d) 0.552Volts, 0.948Volts, 1.08E-5 A
    e) 1.50Volts, 0.00Volts, 0.00 A
    No answer given yet