by yawhuatAC (Alternating Current) and DC (Direct Current) motors are two types of electric motors that convert electrical energy into mechanical energy, differing primarily in the type of current they use: AC motors use alternating current, while DC motors use direct current. The AC motor can be used pumps, fans, industrial machines, compressors, because it is used when […]
by yawhuatSolving Graphical Resultant Force IGCSE Here is how you solve Physics questions (Resultant Forces). Student must be able to use graphical method to determien the magnitured of force and also the direction of the force. Step is very simple since this question only requires basic math and some understanding about scale and ratio. Graphical Method […]
by yawhuatIGCSE Physics Online Class Here is one of the question from IGCSE Physics Paper. In the exam question, student should understand the basic diagram of thermocouple and how it function. Since the question uses the measurement object as sulphur, make sure you indicate that you deduce the measurement with the object sulphur How a […]
by yawhuatThe life cycle of the Star/Sun starts from nebulae (consisting of gas and dust). All stars start from a cluster of gas and dust but as gravity pulls all the gas and dust, a protostar will start to form. Protostar The stage where clusters of gas and dust gather and pull together. Temperature increases as […]
by yawhuatConcave and Convex Ray Diagram Understand the concept of a ray diagram in a convex and concave lens. By being able to draw the ray diagram, students can understand the characteristics of the ray. The position of the object will tell whether the image formed (Real/ Virtual, Inverter/Upright and Magnified/Diminished) Ray Diagrams for Convex Lens […]
by yawhuatCalculating Wat in the Electrical Consumption The applications below are used in households. Find the amount of kWh usage for 5 hours. Give your Question 1: How much electrical energy in joules does a 100W lamp transfer in 1-second 5 seconds 1-minute Solution a) 1600 x 1 = 100J b) 100 x 5 = 500J […]
by yawhuatResistor is a device that limits the flow of the current. The most commonly used film resistors can be divided into types according to the materials used: carbon-film, metal-alloy and metal-oxide. Discuss the use of Varistor LDR / Photoresistor Thermistor Varistor Varistor stands for “variable resistor” and is an electronic component. It is used to […]
by yawhuatThe sensitivity of the thermometer is the ability of the thermometer to detect a small change in temperature. Here are some of the factors that influence the sensitivity of glass thermometers Thickness of the glass wall A thicker glass wall reduces the sensitivity of the thermometer Diameter of the capillary tube The smaller diameter of […]
by yawhuatAn electric field is a region of electrical charge. We have two types of charges that create an electric field. Positive charge and negative charge. Positive charge: Field lines are extended outward from the positive charge Negative charge: Field lines are extended inward into the negative charge The diagram above shows the interaction between two […]
by yawhuatSTATIC CHARGE ONLINE IGCSE PHYSICS CLASS Static charges are electrical charges comprised of Positive and Negative charges. Static charges do not move since it resides statically on the insulators. Like charges repel while unlike charges attract each other. How does static charge create? Static charges are produced when two or more objects are in contact […]