There is a transfer of heat from the inner solid core to the outer liquid core and it causes the convention of liquid iron of outer core. As iron is metal and it is a good conductor of electricity, so, its motion causes the generation of the magnetic field. The magnetic field of the earth … Read more
For describing the magnetic field of the earth, three magnetic elements are of significant importance. They include the angle of declination, dip, and the horizontal component of the earth’s magnetic field. The magnetic declination is the angle of the horizontal plane, which is between the magnetized compass needle points and the magnetic north. The variation … Read more
When Einstein was a child, he was much fascinated by compass, and his ability for deep thinking and nuclear understanding distance, magnetic and gravitational forces, enabled him to discover the theory of relativity. As the magnetic forces are acting at some distance, so for the representation of magnetic forces, the magnetic field can be defined. … Read more
Electromagnets and Factors Affecting Their Strengths The electromagnets are fundamental and useful devices as they are producing the controllable amount of magnetic force from the electric current. The strong magnets are cool and they have many turns of wire in the coil and are using larger amounts of current. Description of Factors Number of Coils … Read more
Wheatstone bridge or bridge circuit is a topology of the electrical circuit in which two circuit branches are bridged by the third branch which connects first two branches at some intermediate point and this was originally developed for laboratory purposes and it can find many applications of both linear or non-linear which includes instrumentation, filtering, … Read more
Torque Experienced by a Current Loop in Uniform Magnetic Field; Moving Coil Galvanometer-its Current Sensitivity and Conversion to Ammeter and Voltmeter Torque is the twisting force that causes the rotation. The axis of rotation is a specific point where there is a rotation of the object. τ = F×r Here F is used to denote … Read more
The long wire that is wound in the form of the helical coil is termed as the solenoid. Commonly, the solenoids are used in the experimental research where there is the involvement of the magnetic field. The winding of the solenoids is much easier, the magnetic field at its center is quite uniform and is … Read more
Potentiometer has gained many aspects in the field of science and especially in the field of physics as it is a three-terminal resistor with a sliding or rotating contacts that forms an adjustable voltage divider and another aspect is that it is a measuring instrument which is essentially a voltage divider used for measuring electric … Read more
Ohm’s law was the most important quantitative description of the physics of electricity and it states that current through a conductor between two points is directly proportional to the voltage across it’s two points. In physics Ohm’s law is rather used to refer various generalizations of the other law as vector form of law is … Read more
What is actually meant by internal resistance and why it should be measured was the biggest question to be solved since the example of battery came up as battery just like other component is an electric circuit which has resistance and this resistance is known as internal resistance. By this it is clear that applying … Read more