## Characteristics of Radio waves – wavelength, color and uses

On the basis of wavelength, there are seven types of electromagnetic waves in the spectrum of light. Radio wave is one of those. In this article, we’re going to learn all characteristics of radio waves including their wavelength, color and uses. This article answers the following questions – What are Radio waves? A radio wave … Read more

## Vernier Calipers – diagram, readings and use

Suppose you need to measure the length of a notebook. What will you do? I guess, you will measure it with your ruler scale. That’s fine because you don’t have to consider the error here. But if you are asked to measure the thickness of a thin rectangular plate, then which instrument will you use? … Read more

## Charge Density Formula in Physics

If a body has an unequal number of protons and electrons then we call it a charged body. It can have either positive charges or negative charges. Either type of charge can produce an electric field near it. The amount of charges and the shape of the body determine the type and value of the … Read more

## What is the Cell in a Battery?

‘Cell and Battery are not the same things‘. How? We all use Batteries in our daily life. Mobiles, Laptops, wall clocks and some other devices need this to work. Do you know why we use a Battery? Yes, it is the source of electricity. In recent times, Electric cars gained popularity. These cars also use … Read more

## What is Standard Form of a number? See example

Here we’re to discuss what is Standard Form in maths and how to write numbers in standard form. Standard Form, also known as Scientific notation of numbers, is a way to express very large or very small numbers in a more compact and convenient form. It is widely used in maths of scientific and technical … Read more

## 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

## Amps, volts and watts in electricity – the relation

Amps, volts and watts are popular units in the field of 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, we’re going to compare these … Read more

## Electric Current – definition, equation, types and 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 in 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