Consider the circuit shown in (Figure 1) . Suppose that E = 9.0V . a)Find the current through the resistor a.?

2 Answers

• To find the current you need to find the total resistance of the circuit.

  I would first combine c and d to become 10 ohms

  Then combine that with b in parallel and you will get 5 ohms

  Then in series the 5 ohm and 5 ohm is 10 ohms for total resistance.

  Current is V/R

  9 / 10 = .9A

• Rt = 5+10//(5+5) = 5+10//10 = 5+(10*10)/(10+10) = 10.0 ohm

  Ia = V/Rt = 9.0/10.0 = 0.90 A

  // means in parallel