MOTION

DISTANCE.

Distance is the measure of the amount of how far a body has moved between two points. Distance is a scalar quantity and the SI unit is meter (m).

RESISTANCE OF MATERIALS

EFFECT OF TEMPERATURE ON RESISTANCE IN METALS, INSULATORS AND SEMICONDUCTORS.

When the temperature of a metal is increased, the amplitude of vibration of atoms in the metal also increase, this impedes the free movement of electrons in the conductors thereby increasing the resistance. Therefore, in metals, increase in temperature

SEMI-CONDUCTOR DIODE

A diode is a one way device that allows electric current to flow through only one direction

I-V CHARACTERISTICS OF OHMIC CONDUCTOR, FILAMENT LAMP AND SEMICONDUCTOR DIODE

OHMIC CONDUCTOR 

Ohmic Conductors are conductors that obey ohm's law. Therefore, the current is directly potential to the potential difference.

POTENTIAL DIFFERENCE AND RESISTANCE

POTENTIAL DIFFERENCE

The potential difference between two points in an electric circuit is the work done when a coulomb of charge passes between the points.

MEASUREMENTS

MEASUREMENTS

Physics like most other sciences is based on experimental observations and measurements.

MAGNETISM

MAGNETIC FORCE

Magnetic force is an attractive pull or a repulsive push between poles of magnets.

ELECTRICITY

ELECTRIC CURRENT

Electric current is defined as the rate at which charge flows through a surface (the cross section of a wire, for example).