====== Chapter 15: Electromagnetic Induction ======
This is a fifteenth chapter of the book Physics 12 published by Punjab Curriculum and Textbook Board, Lahore, Pakistan.

After studying this chapter, the students will be able to:

  * Recall that a changing magnetic flux through a circuit causes an emf to be induced in the circuit.
  * Know that the induced emf lasts so long as the magnetic flux keeps changing.
  * Determine Motional emf.
  * Use Faraday's law of electromagnetic induction to determine the magnitude induced emf.
  * Apply Lenz's law to determine the direction of induced emf.
  * Recognize self and mutual induction.
  * Define mutual inductance, self-inductance and its unit henry.
  * Know and use the formula $E=\frac{1}{2} LI^2$
  * Calculate the energy stored in an inductance.
  * Describe the principle, construction and operation of an AC and DC generator.
  * Describe the principle, construction and operation of DC motor.
  * Recognize back emf in motors and back motor effect in generators.
  * Describe the structure and principle of operation of transformer.
  * Use $\frac{N_s}{N_p}= \frac{V_s}{V_p}$  and $V_p I_p=V_s I_s$ for an ideal transformer.
  * Apply transformer equation to solve the problems.
  * Understand and describe eddy currents and use of laminated core.

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| **Question**: |{{ :fsc-pctb-12:notes:fsc-pctb-12-questions-ch15.pdf |Download PDF}} |
| **Numerical**: |{{ :fsc-pctb-12:notes:fsc-pctb-12-numericals-ch15.pdf |Download PDF}} |
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{{tag>FSc FSc_Part2 PCTB Notes}}