# Electrical engineering - practice problems

Electrical engineering is an engineering discipline that generally deals with the study and application of electricity, electronics, and electromagnetism.#### Number of problems found: 116

- Electric charge

The electric current in a microprocessor circuit is 0.230 μA. How many coulombs pass a given point in the circuit in 1.50 ms? - Cross-section 71254

The steel conductors of the long-distance power line have a cross-section of 5 cm². Calculate the resistance of a steel wire with a length of 2 km if the resistivity of the steel is 13 * 10-8 kΩ · m. - Instantaneous 69064

Describe how the instantaneous power value in the AC circuit changes during one period. - A fan

A fan with a resistance of 20 Ω is connected to a power supply. The current flowing through the circuit is 2.5 A. What is the voltage of the power supply? - Cross-section and coulombs

Determine the current flowing through the conductor if a charge of 150 C has passed through its cross-section in one minute. - Conductor 66234

For how long does a charge of 600 C pass through the conductor at a current of 1 A.? - Resistance 66074

Determine the current flowing through the car's starter, whose resistance is 60 milliohms at 12V - Resistances 66064

Two resistors with resistances of 40 ohms and 60 ohms are connected in series and connected to a voltage of 150V. A) the total resistance B) current in the circuit C) voltage on both resistors - Resistance 66054

The handset has a resistance of 4000 ohms. Calculate what voltage is connected to them if the current passes 2.5mA. - Perpendicular 62824

The magnetic induction vector at a given field location has the direction: a) to the south magnetic pole b) tangent to the induction line c) to the north magnetic pole d) perpendicular to the tangent to the induction line - Conductor resistance

Calculate the resistance value of the electrical conductor if it is connected to a voltage of 12 V and an electric current of 0.3 A passes through it. - Resistance 62104

The iron is connected to a 230 V power supply and has a current of 5000 mA. Calculate the electrical resistance of the iron. - Electrical 61534

A current of 5 mA flows through a resistor with an electrical resistance of 600 Ω. What electrical voltage do we measure between the resistor terminals? - Voltage - Kirchoff laws

At a voltage of 2.5V, a current I1= 20mA flows through the resistor. What will be the voltage at the ends of the resistor when the current I2= 1,2A passes through it? - Resistance 58091

Does the copper conductor have a resistance of 2.8Ω at 36 ° C. What will be the resistance value after cooling to -22 ° C? - Cooker spiral

A current of 4.4 A flow through the spiral of the electric cooker at a voltage of 220 V. What is the resistance of the spiral? - Power consumption

The price of electricity is ₱6.50 per kilowatt hour (kWh). If a television with 120 W power consumption ran from 7:30 AM to 12:30 PM, how much electricity was consumed? How much will this cost? - Manganin

How long must a manganin wire with a diameter of 0.8 mm have to have a value of 10Ω? - The coil 2

The coil of a moving coil voltmeter is 40 mm long and 30 mm wide and has 100 turns on it. The control spring exerts a torque of 240 x 10-6 N-m when the deflection is 100 divisions on full scale. If the flux density of the magnetic field in the air gap is - Serial resistors

In the circuit shown ( two resistors, R1 and R2 serial connected), the total resistance from A to B is 16 ohms. Find the resistance R2 and the current through the R1 = 12-Ohm resistor if the voltage between A and B is 10 V.

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