Electrical engineering - math problems

Electrical engineering is an engineering discipline that generally deals with the study and application of electricity, electronics, and electromagnetism.

Number of problems found: 48

  • Resistance
    Rezistor_2 A resistor having an electrical resistance of 1.5 k ohms passes an electrical current of 0.1 A. Calculate what voltage is between the terminals of the resistor.
  • Coil as a girl
    tlmivka_TL1.JPG The electrical resistance of the copper wire coil is 2.0 ohms. What current runs through the coil when the voltage between the terminals is 3.0 V?
  • Two resistors
    resistor_1 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!
  • Efficiency
    rychlovarna-kanvica What is the power output of kettle 2 kW with efficiency 90%?
  • Two resistors
    two_resistors Two resistors when they give 25 ohms in series and 4 ohms in parallel what the values of
  • Transformer
    transformator Transformer - U1 = 230 V, N1 = 300, N2 = 1,200, I1 = 4 A. Calculate the transformation ratio, voltage and current in the secondary coil.
  • The bulb
    bulb _5 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_1 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?
  • 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)?
  • Resistance
    bulb_1 Determine the resistance of the bulb with the current 200 mA and is in a regular lamp (230V).
  • The bulb
    bulbs The bulb has a reading of 6V-0.05 A, what current flows through the bulb if we connect it to a cell with a voltage of 12V?
  • Resistance - ohms
    resistor_2 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?
  • The resistance
    resistor What is the resistance of an aluminum wire 0.2 km long and 10 mm in diameter?
  • Energy consumption
    elektromer The device is connected to 230V and draws 3.5A current. Power consumption is 1932kJ. How many minutes has this device been in operation?
  • Electronics: Resistors in parallel
    resistors_1 From relation for calculating the resistance of parallel combination of resistors: ? Calculate the R, if R1 = 2Ω a R2 = 15Ω
  • Cooker
    kWMeter A current of 2A passes through the immersion cooker at a voltage of 230V. What work do the electric field forces in 2 minutes?
  • Resistors
    resistors Two resistors connected in series give the resulting resistance 245Ω and 60Ω in parallel. Determine the resistance of these resistors.
  • 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).
  • 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.

Do you have an interesting mathematical word problem that you can't solve it? Submit a math problem, and we can try to solve it.

We will send a solution to your e-mail address. Solved examples are also published here. Please enter the e-mail correctly and check whether you don't have a full mailbox.

Please do not submit problems from current active competitions such as Mathematical Olympiad, correspondence seminars etc...

See also more information on Wikipedia.