Question

Connect the provided coil to the scope and connect the probe one one side and the scope’s ground to the other side. Move the magnet in and out and observe how many volts of EMF you can you produce with the provided magnet and how can you maximize this value. What difference does the orientation of the magnet make? How’s conservation of energy ensured here (discussion)?

the data that have:

south in "+" voltage

north in "-" voltage

+ max =0.225 volts

-max = 0.225 volts

expermental data

Answer 1

By changing the orientation of magnet, the direction of Magnetic field is reversed and due to this flux changes. Rate of change of flux is directly proportional to EMF induced in the coil also changes in opposite direction.

Conservation of energy is still there. The mechanical energy used in changing the flux gets converted into electrical energy.

Example: Thermal Power plants use Power from burning Coal/gas to rotate Turbine Generators to produce electricity.