ELECTROMAGNETIC WAVES AND ELECTROMAGNETIC SPECTRUM Electromagnetic (EM) waves are waves that travel through the vacuum of outer space. Unlike mechanical waves, they do not require a medium to travel. They are formed when an electric field interacts with a magnetic field. EM waves are a fundamental concept in physics and have numerous applications in everyday ….  Read More

GRAVITATIONAL FIELD Gravitational field is a region of space surrounding a mass where another mass experiences a force of gravitational attraction. Kepler’s Laws of Planetary Motion First Law (Law of Ellipses): Planets orbit the Sun in elliptical paths, with the Sun at one of the two foci of the ellipse. Second Law (Law of Equal ….  Read More

GRAVITATIONAL FIELD Gravitational field is a region of space surrounding a mass where another mass experiences a force of gravitational attraction. Kepler’s Laws of Planetary Motion First Law (Law of Ellipses): Planets orbit the Sun in elliptical paths, with the Sun at one of the two foci of the ellipse. Second Law (Law of Equal ….  Read More

ELECTRIC FIELD The electric field is any region where a charge experiences a force of electric origin. Electric lines of force are imaginary lines drawn in such a way that the direction at any point of the tangent is the same as the direction of the field at the same point. Coulomb’s law The electric ….  Read More

ELECTROLYSIS Electrolysis is defined as a process of decomposing ionic compounds into their elements by passing a direct electric current through the compound in a fluid form. The cations are reduced at the cathode, and anions are oxidized at the anode. The main components that are required to conduct electrolysis are an electrolyte, electrodes, and ….  Read More

MAGNET A magnet is a material, often in the shape of a bar, which attracts pieces of iron or steel. When suspended or pivoted freely, a magnetic always comes to rest close to the geographical north-south direction. The end which points to the north is called the north-seeking (N) pole while the end pointing to ….  Read More

ELECTROMAGNETIC FIELD An electromagnetic field is a field representing the joint interaction of electric and magnetic forces. The electromagnetic field exerts forces on charged particles. The force on a charge q moving with a velocity v (less than the velocity of light) is given as: F = q (E + v X B) Interaction between ….  Read More

TOPIC: ALTERNATING CURRENT(I)  A.C circuits are circuits through which an alternating current flows. Such circuits are used extensively in power transmission, radio and television, computer technology, telecommunication and in medicine. It varies sinusoid ally or periodically, in such a way as to reverse its direction periodically. The commonest form of such a.c can be represented ….  Read More