Engineering Board Exam Reviewer · Series-Parallel Circuits · medium

In the ladder network shown, V=30 V, R1=6, , R2=6, , R3=3, , and R4=9, . Find the current through R3.

  1. 3 A
  2. 2 A
  3. 1 A
  4. 0.5 A

Answer

C. 1 A

Solution

VA=12 V is across the branch R3+R4=12, , so I3=VA/R3+R4= 12 V12, =1 A.

More Series-Parallel Circuits questions

  1. In the ladder network shown, V=4 V, R1=10, , R2=15, , R3=7, , and R4=3, . Find the voltage at point A with respect to the negative…
  2. In the ladder network shown, V=18 V, R1=12, , R2=40, , R3=55, , and R4=5, . Find the total resistance seen by the source.
  3. In the circuit shown, V=30 V, R1=10, , R2=6, , R3=9, , and R4=30, . Find the current through R4.
  4. In the circuit shown, V=23 V, R1=20, , R2=7, , R3=5, , and R4=4, . Find the total current supplied by the source.
  5. In the circuit shown, V=18 V, R1=8, , R2=3, , R3=3, , and R4=12, . Find the total resistance seen by the source.
  6. In the circuit shown, V=128 V, R1=20, , R2=30, , and RL=20, . Find the voltage across the load RL.
  7. In the circuit shown, V=60 V, R1=20, , R2=20, , and RL=5, . Find the voltage across the load RL.
  8. In the series-parallel circuit shown, V=56 V, R1=6, , R2=10, , and R3=40, . Find the total power dissipated in the circuit.
  9. In the series-parallel circuit shown, V=115 V, R1=8, , R2=60, , and R3=20, . How much power is dissipated by R2?
  10. In the series-parallel circuit shown, V=60 V, R1=10, , R2=30, , and R3=15, . Find the current through R3.

All Series-Parallel Circuits questions