DELHI SCHOOL TEACHERS FORUM
CLASS -12  PHYSICS   Lesson -6 (ELECTROMAGNETIC INDUCTION) based on Class held on 18/09/2020.     Disclaimer : DSTF will not be responsible for any mistake in Test.
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To Download Deleted Syllabus of All subject Click this link  : https://myedudel.blogspot.com/2020/08/deleted-syllabus-xii-class-2020-21.html
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1. The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N, increases as *
1 point
2.  How does the self-inductance of an air core coil change, when  the number of turns in the coils is decreased *
1 point
3.  How does the self-inductance of an air core coil change, when  an iron rod is introduced in the coil. *
1 point
4.  An inductor may store energy in *
1 point
5.  The dimensional formula of inductance is *
1 point
6.  calculate the induced emf in a coil of 8 H inductance in which the current changes from 8 A to 5 A in 0.3 s. *
2 points
7.  Which of the following is not correct for Self -inductance of a solenoid? *
1 point
8.  Match the Column *
5 points
TRUE
FALSE
The inductance is said to be one Henry when an emf of one volt induces in a coil for unit rate of change of electric current through it.
Inductance is a Vector Quantity.
The self-induced emf is also called the back emf.
Self-inductance of a solenoid depends on its geometry and magnetic permeability of the core material.
Magnetic flux (Φ) linked with a coil is inversely proportional to the current (I) flowing though it.
9.  Match the Column *
2 points
Self Inductance
Inductor
Coefficient of self-inductance
The phenomenon of production of induced emf in a coil itself when electric current passing through that changes is called
An electrical component that stores energy in a magnetic field when electric current flows through it called
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