Whenever the magnetic flux linked with an electric circuit changes, an emf is induced in the circuit. This is called. (a) electromagnetic induction.
People also ask, how can a magnetic field be produced Mcq?
8. How can a magnetic field be produced? Explanation: An electric current as well as the permanent magnet produces a magnetic field whereas a temporary magnet fails to do so. 9.
Similarly one may ask, what is self inductance derivation?
Self inductance is the ratio of induced electromotive force (EMF) across a coil to the rate of change of current through the coil. We denote self inductance or coefficient of with English letter L. Its unit is Henry (H).
What is the condition of an electromagnetic induction class 10 Mcq?
[1] There should be relative motion between the coil of wire & magnet. [2] When a magnet is moved inward and outward in magnetic field & change in magnetic frequency occur due to which current is induced.
What is the magnetic field inside pipe Mcq?
What is the magnetic field inside a pipe? Explanation: The magnetic field inside a pipe, i.e. inside a hollow cylindrical wire is zero.
What is the main difference in an electromagnet and bar magnet Mcq?
Complete Step by step solution
| BAR MAGNET | ELECTROMAGNET |
|---|---|
| The strength of the magnetic field produced by a bar magnet is constant. | The strength of the magnetic field produced by an electromagnetic can be varied, depending on the current that passes through the winding or the number of turns. |
What should be the core of an electromagnet Mcq?
MCQ : The most suitable material for making the core of an electromagnet is. The most suitable material for making the core of an electromagnet is soft iron because its use as a core in a solenoid produces the strongest magnetism.
What type of coal does the electromagnet consists of MCQ?
What type of core does the electromagnetic consist of? Explanation: Electromagnets consists of a ferromagnetic core.