30. Induction and Inductance

Faraday's Law

Faraday's Law of Electromagnetic Induction, Magnetic Flux & Induced EMF - Physics & Electromagnetism

A square conducting wire of side length 4 cm is in a 2 T magnetic field. It rotates such that the angle of the magnetic field to the normal of the square increases from 30° to 60° in 2 s. What is the induced current on the wire if its resistance is 5 mΩ?

Faraday's Law Introduction | Physics | Khan Academy

Faraday's Law example | Physics | Khan Academy


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<img src="https://media.pearsoncmg.com/aw/aw_knight_cp_4_du/msa/content/practice-test/img/CH25_Question03.jpg" alt="The figure illustrates a rectangular loop moving down toward a horizontal current-carrying wire. A velocity vector arrow labeled vector v from the loop points down. Current I flows out from the left end of the wire." /> The figure shows a wire loop being moved toward a current-carrying wire. If the loop continues to move past the wire, so that the loop is lower than the wire in the picture, and still moving, what will be the direction of the induced current in the loop?

In a region of space, a magnetic field is increasing at <math display=“inline”><mrow><mn>3.0</mn><mtext>&#x00A0;</mtext><mtext>T/s</mtext></mrow></math>. A square loop of wire with a side of <math display=“inline”><mrow><mrow><mn>12</mn><mo rspace="thickmathspace">&#x2062;</mo><mi mathvariant="normal" class="MathML-Unit">cm</mi></mrow></mrow></math> is oriented perpendicular to the field. The loop has a total resistance of <math display=“inline”><mrow><mn>0.020</mn><mtext>&#x00A0;</mtext><mo>&#x03A9;</mo></mrow></math>. What current is induced in the loop?

Current in a Circuit with a Changing Magnetic Field

Anderson Video - Faraday's Law Example

Faraday's Law Example - Rotating Loop | Physics with Professor Matt Anderson | M24-03

A tightly-wound 200-turn rectangular loop has dimensions of 40cm by 70cm. A constant magnetic field of 3.5T points in the same direction as the normal of the loop. If the dimensions of the loop change to 20cm by 35cm over 0.5s, with the number of turns remaining the same, what is the induced EMF on the rectangular loop?

Anderson Video - Faraday's Law

Electromagnetic Induction (6 of 15) Faraday's Law, Example Problems

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