Consider the situation shown below, in which you loved the bar magnet toward the
ID: 1451265 • Letter: C
Question
Consider the situation shown below, in which you loved the bar magnet toward the coil, with the north pole facing the coil. Suppose you repeated this situation with single change made to the apparatus For each single change described below:1: would that change cause the maximum efficiency induced in the coil to be greater than, smaller then, or the same as it was in the original situation?
2: would that change cause the maximum deflection of the galvanometer needle to be greater than smaller than or the same as what it was in the original situation?
Case #1: the speed at which you moved the magnet is larger than what it was originally.
Lab: EM induction III. Summary questions A. Consider the situation shown below, in which you moved the bar magnet toward the coil, with the PHY 221 north pole facing the coil. Note: Direction of coils not shown Suppose that you repeated this situation with single change made to the apparatus For each single change described below: Would that change cause the maximum EME induced in the coil to be greater than, smaller than, or the same as what it was in the original situation? 1. m e m 2. Would that change cause the maximum deflection of the galvanometer needle to be greater than, smaller than, or the same as what it was in the original situation? Explain your reasoning. Case #1: The speed at which you moved the magnet is larger than what it was originally. Case #2: One of the wires to the galvanometer is cut just before you move the magnet toward the coil.
Explanation / Answer
1)
When the speed of the magnet is larger than the original then the maximum emf induced will be greater than the original
because the flux linked with the coil increases
2)
when the wire of Galvanometer wire is cut then no deflection is shown
because it is not connected