Electrical engineer interview questions - basic electrical engineering 1.Define electric current ?
Electric current is the movement or flow of electrons through a conductive material
2.Define “emf” / Electromotive force?
In order to cause the ‘free’ electrons to drift in a given direction an electromotive force must be applied The ‘emf’ is the driving force in an electric circuit .The symbol of ‘emf’ is E and the unit of measurement is the volt ‘V’
3.Define potential difference?
Whenever current flows through a circuit element in a circuit such as resistor,there will be a potential difference developed across it.The unit is ‘volt’
4.Define resistance
Resistance is the opposition to the current flow measured in ohms
- Expain ohms law
It states that the current in a resistive circuit is directly proportional to its applied voltage and inversely proportional to its resistance provided that all other factors remain constant
V=IR
6.Define power
Power is defined as rate of doing work .Unit is watts
P = W/t