Electromagnetic Induction Student's Results.html

# Electromagnetic Induction Student's Results.html - Exercise...

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Exercise 1: A wire moving through a constant, uniform magnetic field 1. When the wire moves from left to right through the field, in what direction do electrons in the wire move? Why? Explain, using the right hand rule. Well, the RHR tells us that the magnetic force is pointing up, the moving charge is moving left and the magnetic field line is tilted left. We find this using our three fingers (thumb, index finger and middle finger). 2. What happens to the buildup of charges at each end of the wire when the wire stops moving? Why? We can answer the question by the fact that when charges are sitting still or when it stops moving, they are unaffected by magnetic fields so it just stays neutral. 3. Is there any correlation between the speed of the wire and the amount of charge buildup at the ends of the wire? Explain, referring to an equation stated above. Well the same magnitude of force is is emitted when you move the force at the same speed. Only the direction of the force will change if you start moving the wire in the opposite direction, but the wire does seem to build more charges the faster you move it opposed to slowly moving it. Exercise 2: An induced emf 4. In Exercise 1, you saw how the wire’s velocity affected the amount of charge that accumulated. How does the wire’s velocity affect the emf in this exercise? What do the two exercises have in common? When changing the wires velocity between positive, it emits a positive voltage and when changing it to negative, it gives a negative voltage. So goes for magnetic field strength when increasing it moves up and when decreasing the V moves down. 5. What is the relationship, if any, between the velocity of the wire and the induced emf (is it linear, inverse, squared)? It seems to have an inverse relationship as it is changes directions dependent on positive or negative.

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