Lenz's Law, Magnetic Flux and Motional EMF

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A loop of wire of with an area of 0.01 square meters is held in a 0.25 T magnet field for 10 seconds. What is the induced emf between the ends of the wire during this time?

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1. A circular loop of wire with a diameter of 0.2 m is held at a 45° angle to a 0.5 T magnetic field. What is the magnetic flux through the loop?

2. The north pole of a magnet is pushed downward into the center of a loop of wire. What will happen?

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About This Quiz & Worksheet

Our short quiz and worksheet is made up of questions designed to assess your knowledge of magnetic flux, Lenz's Law and motional emf Here you'll be tested on subjects including calculating the magnetic flux through a loop and when an emf will be induced between the ends of a wire.

Quiz & Worksheet Goals

This quiz is a handy way to see if you know:

  • The induced emf between the ends of a wire in example scenarios
  • How to calculate the magnetic flux through a loop
  • What happens when the north pole of a magnet is pushed downward into the center of a loop of wire
  • The situation in which an emf will be induced between the ends of a wire

Skills Practiced

  • Interpreting information - verify that you can read information regarding calculating the induced emf between the ends of a wire and interpret it correctly
  • Reading comprehension - ensure that you draw the most important information from the related lesson about motional emf, magnetic flux and Lenz's law
  • Information recall - access the knowledge you've gained regarding what happens when the north pole of a magnet is pushed downwards into the center of a loop of wire

Additional Learning

Our informative lesson titled Lenz's Law, Magnetic Flux and Motional EMF offers you a convenient way to study more about this subject. Once you complete this lesson, you should be ready to do the following:

  • Name the scientist who developed the process of electromagnetic induction
  • Detail Faraday's Law and Lenz's Law
  • Identify the origins of the word 'flux'
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