2020-10-23

What is the electromagnetic induction Mcq?

Electromagnetic induction is defined as the production of an electromotive force across an electric conductor in the changing magnetic field.

When there is change in magnetic flux emf is induced this statement is Mcq?

Explanation: According to Faraday’s first law, whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in the circuit. This induced emf persists as long as he change in magnetic flux continues. Therefore, this is a true statement. 5.

Which of the following is the second law of EMI Mcq?

Faraday’s second law of electromagnetic induction states that the magnitude of emf induced in the coil is equal to the rate of change of flux that linkages with the coil.

Which of the following Cannot be used to increase the emf induced in a coil Mcq?

Constant current cannot produce induce e.m.f.

What is L self inductance?

Inductance, L is actually a measure of an inductors “resistance” to the change of the current flowing through the circuit and the larger is its value in Henries, the lower will be the rate of current change.

What is emf stand for?

Electromotive force
Electromotive force (EMF) is equal to the terminal potential difference when no current flows. EMF and terminal potential difference (V) are both measured in volts, however they are not the same thing. EMF (ϵ) is the amount of energy (E) provided by the battery to each coulomb of charge (Q) passing through.

What is statically induced emf?

Statically Induced EMF When the conductor is stationary and the magnetic field is changing, the induced EMF in such a way is known as statically induced EMF (as in a transformer). It is so called because the EMF is induced in a conductor which is stationary.

What is the direction of induced emf?

The direction of induced emf is perpendicular to the direction of magnetic field as well as the direction of velocity of the charge. This direction can be determined by right-hand rule. Complete answer: When a charge is made to move in a magnetic field, an emf is induced in the charge.

Faraday’s laws of electrolysis, in chemistry, two quantitative laws used to express magnitudes of electrolytic effects, first described by the English scientist Michael Faraday in 1833.

Faraday’s law of electromagnetic induction: It states that an emf or voltage is induced in a current-carrying conductor if there is a change in magnetic flux through the coil and the magnitude of emf induced in the coil is equal to the rate of change of flux that linkages with the coil.

What is the SI unit of emf?

Electromotive force, abbreviation E or emf, energy per unit electric charge that is imparted by an energy source, such as an electric generator or a battery. It is commonly measured in units of volts, equivalent in the metre–kilogram–second system to one joule per coulomb of electric charge.

Can self inductance be negative?

Like mutual inductance, the self inductance of a circuit is measured in units of henries, and is a purely geometric quantity, depending only on the shape of the circuit and number of turns in the circuit. This is not the case for mutual inductances, which can be either positive or negative.

How to solve NCERT class 12 electromagnetic induction MCQs?

Students can solve NCERT Class 12 Physics Electromagnetic Induction MCQs Pdf with Answers to know their preparation level. 1. The north pole of a long bar magnet was pushed slowly into a short solenoid connected to a short galvanometer.

What are the physics MCQs for Class 12?

Free PDF Download of CBSE Physics Multiple Choice Questions for Class 12 with Answers Chapter 6 Electromagnetic Induction. Physics MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern.

How are two inductors of inductance connected in series?

Two inductors of inductance .L each are connected in series with opposite? magnetic fluxes. The resultant inductance is We hope the given Physics MCQs for Class 12 with Answers Chapter 6 Electromagnetic Induction will help you.

What is the magnitude of an induced EMF?

The magnitude of the induced emf in a circuit is equal to the time rate of change of ……………. through the circuit. Question 5. The statement “The polarity of induced emf is such that it tends to produce a current which opposes the change in magnetic flux that produced it” is called ………………. law.