National Apprenticeship Training Scheme Electrician Interview Questions and Answers

Ohm's law is a fundamental law of electrical engineering that relates the current flowing through a conductor to the voltage applied across it.

• Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

• The relationship between voltage, current, and resistance can be expressed mathematically as V = IR, where V is voltage, I is current, and R is ...read more

Ohm's law states that voltage is directly proportional to current.

• Ohm's law is a fundamental principle in electrical engineering.

• It states that the voltage across a conductor is directly proportional to the current flowing through it.

• This relationship is expressed mathematically as V = IR, where V is voltage, I is current, and R is resistance.

• Ohm's law is used to calculate the voltage, current, or resistance in a circu...read more

To convert AC to DC, a rectifier is used which converts the alternating current to direct current.

• A rectifier is used to convert AC to DC.

• There are different types of rectifiers such as half-wave rectifier, full-wave rectifier, and bridge rectifier.

• Rectifiers use diodes to convert the current.

• The rectifier circuit filters out the AC component and provides a smooth DC output.

• Examples of rectifiers include power supplies