Three resistors

You have to connect three identical resistors with 12 Ohm resistances so that you gradually get the resulting resistance a) 36 Ohm, b) 4 Ohm, 18 Ohm. Draw a diagram of each circuit.


a = (Correct answer is: SSS) Wrong answer
b = (Correct answer is: PPP) Wrong answer
c = (Correct answer is: SPP) Wrong answer

Step-by-step explanation:

R1=12 Ω  R2=R1+R1+R1=12+12+12=36 Ω  a=SSS
1/R3=1/R1+1/R1+1/R1=1/12+1/12+1/12=14=0.25  R3=1/(1/R1+1/R1+1/R1)=1/(1/12+1/12+1/12)=4 Ω  b=PPP
R4=R1+1/(1/R1+1/R1)=12+1/(1/12+1/12)=18 Ω  c=SPP

We will be pleased if You send us any improvements to this math problem. Thank you!


Related math problems and questions:

  • Resistor
    resistor-res22 Resistor 1 with a resistance of 100 Ohms and resistor 2 with a resistance of 400 Ohms are connected side by side in the circuit. There is a voltage of 80V between the resistor terminals. a) Draw a circuit diagram and write the entered quantities in it b)
  • Resistors
    resistors Two resistors connected in series give the resulting resistance 245Ω and 60Ω in parallel. Determine the resistance of these resistors.
  • Closed circuit
    voltemeter In a closed circuit, there is a voltage source with U1 = 12 V and with an internal resistance R1 = 0.2 Ω. The external resistance is R2 = 19.8 Ω. Determine the electric current and terminal voltage.
  • Lowest voltage
    inSeries Three resistors with resistors R1 = 10 kΩ, R2 = 20 kΩ, R3 = 30 kΩ are connected in series and an external voltage U = 30 V is connected to them. On which resistor is the lowest voltage?
  • Circuit voltage
    resistor Calculate the closed circuit voltage. Calculate the power on the resistors. R1 = 30 ohms, R2 = 10 ohms. I = 0.1A. U =?. The resistors are connected in series, one after the other.
  • Two resistors
    two_resistors Two resistors when they give 25 ohms in series and 4 ohms in parallel what the values of
  • Resistance - ohms
    resistor If the resistance of the first resistor is 300 ohms and the resistance of the second resistor is 100 ohms. What is the resulting resistance?
  • Two resistors
    resistor Two resistors 20 Ω and 60 Ω are connected in series and an external voltage of 400 V is connected to them. What are the electrical voltages on the respective resistors? Please comment!
  • The bulbs
    resistor The bulbs are connected serially two bulbs and one resistor. Each bulb has a resistivity of 100 ohms and resistor of 60 ohms The voltage source in the circuit is 24 volts. Do you know what voltage to measure on individual appliances?
  • Resistance
    bulb Determine the resistance of the bulb with the current 200 mA and is in a regular lamp (230V).
  • Mains voltage
    bulb How much electric current flows through the appliance with a resistance of 40kΩ, which is connected to the mains voltage (230 V)?
  • Four pavers
    tiles2 Four pavers would pave the square in 18 days. How many pavers do you need to add to done work in 12 days?
  • A 36
    huby A 36 g sample of the substance contains 91% water. After drying, the weight of the sample was reduced to 18 g. What percentage of water is now in the sample?
  • Current in the conductor
    ohms-law Calculate the current in the conductor (in mA) if it is connected to a 4.5 V voltage source and its resistance is 20 (ohm).
  • The bulb
    bulb Calculate what voltage is at the terminals of the bulb, if the work is done 18 J to transfer particles with an electric charge of 6 C.
  • The bulb
    bulbs What is the resistance of a filament lamp when it is connected to a 9V battery and has a current of 120 mA?
  • Resistance of the resistor
    Elektrárna The resistor terminals have a voltage of 20 V and a current of 5 mA is passed through. What is the resistance of the resistor?