by abhishek | Aug 27, 2020 | Magnetic Effects of Current
Right hand thumb rule was given by Maxwell. So this rule is also known as Maxwell’s right hand thumb rule. According to this rule, imagine that you are holding a current carrying wire in your right hand so that the thumb points in the direction of the current, then...
by Rajan Gupta | Aug 27, 2020 | Universe
Artificial satellites are placed in their orbits around the earth with the help of very powerful launch vehicles or rockets. For this purpose specially designed rockets are fabricated by scientists. In rockets special kinds of fuels called rocket propellants are...
by Rajan Gupta | Aug 27, 2020 | Universe
A satellite is a small body which revolves around a planet. For example, moon is the satellite of the earth because it revolves around it. Satellites always revolve around the planets in closed elliptical paths. The closed elliptical path of a satellite around a...
by Rajan Gupta | Aug 27, 2020 | Universe
Various theories have been put forward by scientists to explain origin of universe. But here we will discuss only two theories related with origin of universe. These are: Big-bang theory and Steady state theory Big-Bang Theory In 1920, an American...
by abhishek | Aug 27, 2020 | Magnetic Effects of Current
To find out magnetic field around a wire carrying electric current take a wire and pass it through the centre of a horizontal sheet of cardboard. Connect the ends of wire to a battery. Sprinkle some iron fillings on the cardboard sheet and switch on the circuit to...
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