Examples of Gravitational Potential Energy (GPE)

In another article, I’ve discussed the Potential energy of an object. It’s the ability to do work due to its position at a height above the ground. In this article, I’m going to explain what is gravitational potential energy and what are some examples of it. What is Gravitational Potential Energy? The work done in … Read more

Top 7 MCQ questions on Surface charge density

The surface Charge density of a conductor refers to the amount of electric charge distributed per unit area on the surface of the conductor. It is one of the important topics in Electrostatics. Because the charge densities are used to determine the electric fields due to different distributions of charge on the conductors. In this … Read more

Comparison of amps, volts and watts in electricity

Amps, volts and watts are some popular units that are related to electricity. You may have seen the voltage rating and power rating on electronic and electrical devices. These imply the amount of power the device will consume and at what maximum volts the device should be operated. In this article, I’m going to compare … Read more

Electric Current and its conventional direction

Electricity is one of the most essential things in our daily life. To deal with an electrical circuit, we need to know the physical quantities associated with it. Current, Voltage, resistance, power, etc. are among those quantities. Many scientists have given various laws of electricity and explained how to determine such physical quantities from a … Read more

How many amps are required for 1500 Watts?

If you have a heater or any other device of 1500 Watts, then you may want to know how many amps it draws. I’m here to explain how many amps flow in a 1500 Watts heater. However, amps and watts do not imply the same physical quantity. These units are used for different purposes. Ampere … Read more

Is 120 Volt Shock Dangerous? Can it kill you?

The typical household power supply in USA is 120 volts. Therefore getting shocked by such an electric voltage is possible while living in a house or office. You need to know how dangerous the 120 volt shock is. Can 120 volts kill you? This article explains it. Can 120 volt shock kill you? How dangerous … Read more

Formula for Force of friction with examples

To identify the dynamics of a particle or a system of particles we need to know the net force acting on it. In another article, I discussed equations for different types of Forces in Physics. Now it’s time to explain these in detail. In this article, I’m going to explore the Force of Friction – … Read more

Transformation of Energy with Examples

We cannot get any energy directly unless it is the light energy of the Sun. Luckily, we have enough mechanisms that can transform light energy into other forms like heat, electricity, chemical energy, etc. These energies can also be transformed among themselves. In this article, I’m going to explore different types of transformation of energy … Read more

Formula of Change in Momentum and Impulse

Momentum is a physical state of an object which is in motion. A moving car cannot be stopped immediately after applying the break. It stops after moving a little distance because of its momentum. Do you know that the position and momentum of a mechanical system can describe the entire dynamics of the system? Therefore, … Read more

Conductivity of a Semiconductor – formula

Earlier we have discussed the basic properties, examples, types and applications of semiconductor materials. We became to know that semiconductors are not excellent conductors of electricity at room temperature. That means a pure semiconductor is not suitable for conducting current and hence it cannot be used to design electronic devices. But there is a solution. … Read more