*VP is Voltage Probe *Picture is of a large coil connected to the voltage probe

Question

*VP is Voltage Probe

*Picture is of a large coil connected to the voltage probe and a bar magnet above

1. So what is the reading (steady positive, negative but heading positive, zero) of the voltage probe, VPa, when the magnet is

(a) held motionless outside the coil along the axis as shown.

(b) held motionless inside the coil along the axis

(c) moved quickly from outside the coil to inside the coil, and then back out.

2. The bar magent is held motionless but the coil is moved toward or away from the magent. What will be the reading by the voltage probe?

Please provide explanations.

Explanation / Answer

1a)0 (since thereis no change in flux)

b)0 (again no change in flux)

c)initially it is negative then it becomes positive (since initially the flux increases and then decreases)

2)when moved towards -negative (due to increase in flux)

away-positive(since flux decreases)

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