posted by .

Resistors R1, R2, and R3 have resistances of 15.0 Ohms, 9.0 Ohms and 8.0 Ohms respectively. R1 and R2 are connected in series, and their combination is in parallel with R3 to form a load across a 6.0-V battery.
-What is the total resistance of the load?
-What is the current in R3
-What is the potential difference across R2?

  • physics -

    First get the effective resistance of R1 and R2 in series. It is 24 ohms. That in parallel with 8 ohms has an overall circuit resistance Reff geiven by
    1/Reff = 1/24 + 1/8 = 4/24 = 1/6
    Therefore Reff = 6 ohms.

    The total current going through the circuit (battery) is
    I = V/Reff = 1.0 amperes.

    The total current going through the R1 and R2 is V/(R1+R2) = 6/24 = 0.25 A
    The potential drop across R2 is
    0.25A*9 ohms = 2.25 V

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. College Physics

    Two 9.1 ohms resistors are connected in parallel, as are two 5.9 ohms resistors. These two combinations are then connected in series in a circuit with a 20 V battery. What is the current in each resistor?
  2. physics

    A 15.0 Ohms resistor is connected in series to a 120V generator and two 10.0 Ohms resistors that are connected in parallel to each other. -What is the total resistance of the load?
  3. physics

    A circuit consists of a 12.0 V battery connected to three resistors 44 ohms, 15 ohms and 120 ohms in series. A)Find the current that flows through the battery. B)Find the potential difference across the 44 Ohms resistor. C)Find the …
  4. Algebra 2

    two resistors are connected in parallel. Their resistances are 6 ohms and 10 ohms. What is the resistance, (R), of the combination?
  5. Algebra 2

    two resistors are connected in parallel. Their resistances are 8 ohms and 17 ohms. What is the resistance (R) of the combination?
  6. physics

    if 3 resistors of 2,3 and 5 ohms are connected in parallel and a battery of 10 volts is applied across it, then what is the potential drop across 3 ohms resistor ?
  7. Physics

    Two identical resistors are connected in parallel across a 26-V battery, which supplies them with a total power of 9.8 W. While the battery is still connected, one of the resistors is heated so that its resistance doubles. The resistance …
  8. Physics

    A 67.6 ohms resistor is connected in parallel with a 103.8 ohms resistor. This parallel group is connected in series with a 20.8 ohms resistor. The total combination is connected across a 18.2-V battery. Find a) the current and b) …
  9. physics

    Two resistors of resistances 3 ohms and 6 ohms are connected in a parallel across a 9 V battery. What is the equivalent resistance and the total current in the circuit?

    two resistors of 25 ohms and 5 ohms respectively are connected in series to a 240V supply calculate the value of a third resistor to be connected in parallel with 25 ohms resistor so that the power dissipated shall be tripled

More Similar Questions