While the strength of permanent magnets depends on the type of material that makes them up, an electromagnet's strength depends on the amount of current that flows through it. Permanent magnets can lose their m
An inductor is a passive electronic component that temporarily stores energy in a magnetic field whenelectric currentflows through the inductor's coil. In its simplest form, an inductor consists of two terminals and an insulated wire coil. Inductors are also known as coils, chokes or reactors in...
The ancient Greeks are known to be among the first people to have discovered lodestones. Magnetism may have seemed magical to them. After all, a magnetic field is invisible. But its effects can be felt. Over the past century, scientists have discovered that a magnet’s secret strength lies ...
NCERT solutions for CBSE and other state boards is a key requirement for students. Doubtnut helps with homework, doubts and solutions to all the questions. It has helped students get under AIR 100 in NEET & IIT JEE. Get PDF and video solutions of IIT-JEE Mains & Advanced previous year pap...
State two ways by which the strength of an electromagnet can be increased. How is AC electrical power generated? What are the currents of I1 and I2 as well as their direction? Name the transformer used in the (a) power generating station (b) power sub station. State the function of ea...
An electromagnet is a type of magnet created by running an electric current through a conductive material. The electric current generates a magnetic field around the material, effectively turning it into a temporary magnet. The strength of the magnetic field produced by an electromagnet can be contr...
If bar magnets are allowed to attract and stick long sides together, what happened to the total strength of the magnetic field and why? What is different about the magnetic poles of a common refrigerator magnet and the common bar magnet? Define Magnetic Field. A) What is an elec...
There are a range of different instruments that can measure magnetic field strength. What is the use of tangent galvanometer? Tangent galvanometer. A tangent galvanometer is an early measuring instrument used for the measurement of electric current. It works by using a compass needle to compare ...
The intense electrical field at the tip of the fracture overcomes the dielectric strength of the acrylic, initiating complete electrical breakdown of the specimen. During breakdown, some of the chemical bonds that held acrylic molecules together suddenly break, stripping away free electrons in a ...
1. The magnetic field strength in a solenoid depends upon the number of turns per unit length in the solenoid. 2. The magnetic field strength in a solenoid depends upon the current flowing in the wire of the solenoid. 3. The magnetic field strength in a solenoid depends upon the diameter...