Engineering Board Exam Reviewer · Parallel Circuits · medium

Two resistors are connected in parallel. One is 12, and the equivalent resistance is 4, . What is the other resistor?

  1. 8,
  2. 16,
  3. 3,
  4. 6,

Answer

D. 6,

Solution

1/R=1/4-1/12=3-1/12=1/6, so R=6, .

More Parallel Circuits questions

  1. In the parallel circuit shown, V=48 V, R1=36, , R2=22, , and R3=80, . Find the total (equivalent) resistance.
  2. In the circuit shown, the current source supplies I=3 A to the parallel resistors R1=12, and R2=24, . Find the current through R2.
  3. In the circuit shown, the current source supplies I=6 A to the parallel resistors R1=10, and R2=40, . Find the current through R1.
  4. In the parallel circuit shown, V=72 V, R1=9, , R2=6, , and R3=18, . Find the total power supplied by the source.
  5. In the parallel circuit shown, V=18 V, R1=20, , and R2=5, . How much power is dissipated by R2?
  6. In the parallel circuit shown, V=72 V, R1=12, , R2=6, , and R3=4, . How much power is dissipated by R1?
  7. In the parallel circuit shown, V=48 V, R1=60, , R2=30, , and R3=20, . Find the current through R2.
  8. In the parallel circuit shown, V=120 V, R1=12, , R2=4, , and R3=6, . Find the total current supplied by the source.
  9. In the parallel circuit shown, V=30 V, R1=8, , R2=12, , and R3=24, . Find the total (equivalent) resistance.
  10. In a parallel circuit, the voltage across each branch is

All Parallel Circuits questions