What is a resistor?
The resistor is a passive electrical component that creates resistance in the flow of electric
current. It is measured in Ohms(Ω) and denoted by ‘R’.
Basic Electrical
Electrical Active and Passive Components
An active component in a circuit is a part that needs power to work. A passive component is a part that doesn’t need power to work.
Basic Electrical Formulas
This table shows basic electrical formulas used to find voltage, current, resistance, power, and energy, helping analyse and design electrical circuits.
Different Values in Electrical Engineering
Charge on electron (e) = – 1.6 x 10-19 C Mass of an electron = 9.11 x 10-31 kg Diameter of an electron = 10-15m Mass of proton = Mass of neutron=1.67 x 10-27 kg Charge on proton = + 1.6 x 10-19 C Charge on neutron= Nil One coulomb= Charge on 625 x 1016 electrons 1 calorie = … Read more
Electrical Units
NAME UNIT RESISTANCE Ohm RESISTIVITY Ohm-meter CONDUCTIVITY Mho/m Or Siemens/m VOLTAGE OR POTENTIAL DIFFERENCE Volt EMF Volt CURRENT Ampere ELECTRONIC POWER Watt ELECTRIC ENERGY Kwh PERMITTIVITY Farad/M ELECTRIC FIELD INTENSITY V/m or N/c ELECTRIC FLUX DESITY C/m2 CAPACITANCE Farad INDUCTANCE Henry MAGNETIC FLUX DENSITY Tesla or weber/m2 MAGNETIC FIELD INTENSITY A/m or oersted or … Read more