Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

What is Photoelectric Emission?Definition of Photoelectric EmissionPhotoelectric emission is defined as the release of electrons from a metal surface when light hits it.Quantum TheoryLight is made up of photons, and each photon’s energy depends on its frequency.Correlation formulaWhere E is the energy of the photon, h is Planck’s constant, and ν is the frequency of the light.The work function of a metal depends on its chemical makeup and physical structure, and it varies among metals. For exampl

What is a Coulomb's Law?Coulomb’s Law DefinitionCoulomb’s law defines the force between two stationary, electrically charged particles, known as the electrostatic force.Electrostatic ForceThe electrostatic force is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.Coulomb’s Law FormulaCoulomb’s ConstantCoulomb’s constant (k) in a vacuum is approximately 8.99 x 10⁹ N m²/C², and it varies with the medium.Historical BackgroundC

What is an Electrical Field?Electric Field DefinitionAn electric field is defined as the region around a charged object where other charges experience a force.Electric Field StrengthMeasures the force exerted on a unit positive charge within the field.Direction of Electric FieldDetermined by the movement of a unit positive charge in response to the field’s force.Applications of Electric FieldsUsed in various technologies like motors, antennas, and power lines.History of Electric FieldsDeveloped

What is Boolean Algebra ?Boolean Algebra DefinitionBoolean algebra is a branch of mathematics focused on variables valued either 1 or 0, used primarily in digital circuit design.Core OperationsIt revolves around three fundamental operations—AND, OR, and NOT—to handle logical operations in binary systems.Theorems and LawsBoolean algebra includes critical theorems like De Morgan’s, which simplify the conversion between ANDs to ORs and vice versa, using complementation.Cumulative Law for Boolean Al

Electric Soldering Iron definitionElectric Soldering Iron is an essential tool for electronic production and electrical maintenance, and its main use is to weld components and wires.Electric Soldering Iron classification Externally heated type Internally heated typeExternal heat type Electric Soldering Iron composition Soldering tip Soldering core Shell Wooden handle Power lead PlugInternal heat type Electric Soldering Iron Controller Connecting rod Spring clamp Soldering core Soldering tipMatte

Spanner definitionA common installation and disassembly tool.Working principle of spannerLever principleWrench classification Hand spanner Open spanner

Insulation Tape definitionA tape used especially by electricians to prevent leakage and act as insulation.Insulation Tape compositionIt consists of a base band and a pressure sensitive adhesive layer. The baseband is generally made of cotton, synthetic fiber fabric and plastic film.Characteristics of Insulation Tape Good viscosity Insulation pressure resistant Flame retardant Weather resistant

Electrical Tool DefinitionA cutting tool commonly used by electricians. An ordinary electrician's knife consists of a blade, a blade, a knife handle, a knife hanger, etc.

Needle Nose PliersThe utility model relates to one of the common tools used for cutting single and multiple strands of thin wire diameter, and for assembly and repair of single strand wire joints, such as bending rings, stripping plastic insulation layer, etc.How Needle-Nose Pliers workLever principleNeedle-Nose Pliers classification High-grade Japanese needle-nose pliers Professional electronic needle nose pliers German labor-saving needle nose pliers VDE high pressure needle nose pliers

Screwdriver definitionA common tool used to turn a screw to hold it in place, usually having a thin wedge head that can be inserted into the slot or notch of the screw head.Technical principleThe working principle of the wheel shaftScrewdriver classification Ordinary screwdriver Combined screwdriver Electric screwdriver Watch driver Small diamond screwdriver