ECE2111L - Experiment 1 & 2

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Capacitor

Electrical component that stores electrical energy, consists of two conductors and a dielectric

voltage source, load

A capacitor is charged when connected to a _____, discharged when connected to a ______

Capacitance

Capacitor’s ability to store an electrical charge into two plates

Electric Potential Energy

Equal to the amount of work required to charge a capacitor

Series Formulas

Parallel Formulas

Charging Formulas

Discharging Formulas

Magnetism

Opposite attract, Like repels, Either poles of a bar magnet attracts an unmagnetized object that contains iron

At least 2500 years ago

When was the first magnetic phenomena (finding of lodestones)

Earth’s magnetic axis

The Earth’s geographic axis is offset to

Magnetic field lines

They show direction of a compass

Magnetic field (B)

exerts force on any other moving charge or current present in the field. Its orientation of the magnetic poles depends on the direction

of current (follows the right-hand rule)

Magnetic field lines

used to visualize how magnetic force is distributed in space around

Tesla (T) or Gauss (G or 10^-4 T)

Magnetic field is expressed in either

The lower the magnetic field

The higher the distance

Electromagnetic Induction

current through a coil of wire induces a magnetic field and vice versa