electric circuit , resistors in parallel definition and diagram

Electric circuit, difference types What is electric circuit? It is part through which electric current flows. Electric circuit must consist of the cells or battery, load or resistor, and switch or key.  There are three types of electric circuits; Open, closed and short circuit.   Open circuit: A circuit is said to be open when …

Transformers, Equation of transformer in physics

Definition of Transformers Transformers are devices use for changing the voltages or currents of an A.C supply. The transformers may be used to increase or decrease the A.C (alternating current) supply. The transformers make use of the properties of mutual inductance to change the voltage of the alternating current (A.C) supply. Transformer may be used …

Circuit, Current electricity questions and answers

1. What is a circuit in electric current? Answer: A circuit is part through which electric currents flow. 2. List the type of circuit and explain them Answer: Open , closed and short circuits Open circuits: A circuit is said to be open when there is gap between the sources and loads, so that there …

Eclipse: Lunar eclipse and solar eclipse ﻿

What is eclipse?  It can be described as an astronomical event that occurs when an Celestial body become temporally  obscured , when it  pass into the shadow of another body or by having another body pass between it and the viewer .Eclipse is often used to explain either a solar eclipses or lunar eclipses (eclipses …

Wave particle duality in micro maters physics

Wave particle duality What is Wave particle duality ? This is the concept of quantum mechanics, which states that every particle or quantum entity may be partly described in terms not only of particles but also of wave. The study of the behavior of light and other electromagnetic radiation, including the properties of wave like …

Vectors and scalar quantities in physics

Vectors and scalar Representations of vectors Parallelogram law of vector Addition of two vectors (compounding two vectors) Resolution of vectors The resultant of more than two vectors Relative motion Vectors and scalar In physics physical quantities are divided into two; vectors and scalar quantities What is Vector quantity?  Vector quantities are physical quantities that have …

wave equation, and general wave in physics

Table of Contents What are waves? Mechanical and Electromagnetic waves Waves motion Transverse and longitudinal waves Propagation of waves General representation of waves Terms use in describing waves and relationship between them Equations of traveling of waves Wavefronts Progressive and stationary waves Stroboscope Properties of waves Polarization  and  Polarization by reflection What is wave? A …

Mirror formula and the nature of the image formed by curved mirrors

Mirror formula and the nature of the image formed by curved mirrors What is a Mirror formula for concave mirror? A mirror formula is a relationship between the object distance or height (u), image distance or height (v) and focal length of the mirror Reflection of light by curved mirror A concave mirror has a …

Refraction of light and Snell’s law in physic

Refraction of light CONTENTS Definition of refraction of wave Refraction of  through rectangular glass block Experimental determination of refractive index using real and apparent depth method Laws of Refraction  waves Refraction  through a triangular prism Total internal reflection and Critical angle Application of total internal reflection in nature Application of totally reflecting prisms Refraction  through …

Reflection of light by plane and covered mirror

Reflection of light : Light is  wave and also a visible form of energy which is radiated outward from a source. We are able to see object because of the light they produce reflects back to us or light that fall on them from other sources also reflects back to us We have luminous and …

Gas laws and equations in physics

What are Gas laws ? To study gas behaviors, we should first of all consider three physical properties of gas, which are pressure volume and temperature. It is based on these three properties that the three gas laws were formulated. Note that among the three states of matter gas is most movable because of high kinetic …

What is Nuclear reaction? There are two types of nuclear reaction in radioactive elements – they are nuclear fission and nuclear fusion Nuclear fission This is nuclear reaction which can be defined as a process in which an unstable nucleus split into two parts of comparable mass. Fusion was discovered by Hann and strassman in …

Simple harmonic motion  Question and answer

Simple harmonic motion Question and answer  1 what is damped oscillation? Answer: Damped oscillation is one in which the amplitude gradually decrease with time and finally come to stop or zero. Simple harmonic motion Question and answer  2 Is a body moving with constant speed in a circular path undergoing acceleration? Answer: No it not …

Resonance and forced Vibration in physics

Force Vibration and Resonance Let talk about force vibration before we discuss resonance.  From observation the amplitude of vibration in simple harmonic motion never really remains constant but becomes smaller and smaller. For instance the amplitude of bob of a simple pendulum decrease slowly until it comes to a stop. This is caused by loss …

Simple harmonic motion in physics

what is simple harmonic motion? If a small body or a particle vibrates or moves to and fro along a straight line under the influence of a force so that its acceleration  toward a fixed point (or it equilibrium position) is proportional to its distance or displacement from that point, the body is said to …

general physics questions and answer  1-10 The system international unit of pressure is Nm-2 or what? Answer: Pascal Define pressure. Answer: Pressure is defined as the force per unit area State the Pascal’s principle Answer: The Pascal’s principle states that the pressure applied to an enclosed fluid is       transmitted  undiminished to every …

Make an AC to DC Converter construction

AC to DC Converter Alternating current (AC) is used for power line transmission and for high power devices like appliances and lights. The characteristics of AC make it ideal for transmission over long lines and for delivering large amounts of power for relatively unregulated uses, such as generating heat and light. Lower power appliances and …