magnetism

A dipole oscillating in the earth’s magnetic field

Magn_oscillatorThe group determined the earth’s Magnetic field B using a pair of magnets that oscillate about a vertically suspended wire. Magnets when suspended in space respond to the influence of the Earth’s magnetic field. Hence their oscillations are an accurate representation of the value of B. The experiment was performed using different wires and threads. The magnetic moment was determined from the space-dependent magnetic field variation and finally this was used to estimate B.

 

By Azeem Iqbal | Physics Studio
DETAIL

Observing Hall Effect in Semiconductors

1. Provided equipment for this experiment.

1. Provided equipment for this experiment.

2. Connection of electromagnet with power supply.

2. Connection of electromagnet with power supply.

3. Placement of the Hall probe in between the pole pieces of electromagnet.

3. Placement of the Hall probe in between the pole pieces of electromagnet.

4. Side view of printed circuit board (PCB) and Hall probe placed vertically in between the pole pieces of electromagnet.

4. Side view of printed circuit board (PCB) and Hall probe placed vertically in between the pole pieces of electromagnet.

5. Top view of printed circuit board (PCB) and Hall probe placed vertically in between the pole pieces of electromagnet.

5. Top view of printed circuit board (PCB) and Hall probe placed vertically in between the pole pieces of electromagnet.

DETAIL

Electromagnetic Induction and Working of Read-Write Operations in Magnetic Media

1. Provided apparatus

1. Provided apparatus

2. A Hall probe connected to the digital multimeter

2. A Hall probe connected to the digital multimeter

3. Voltage value shown by the multimeter when Hall probe is connected to the computer

3. Voltage value shown by the multimeter when Hall probe is connected to the computer

4. Attaching a disk magnet to the steel meter rule

4. Attaching a disk magnet to the steel meter rule

5. Hall sensor's flat face is perpendicular to the magnetic axis of the disk magnet

5. Hall sensor’s flat face is perpendicular to the magnetic axis of the disk magnet

6. Voltage measurement using Hall probe

6. Voltage measurement using Hall probe

7. Measuring the diameter of a disk magnet using vernier calliper

7. Measuring the diameter of a disk magnet using vernier calliper

8. All the M-files must be in the current directory of MATLAB

8. All the M-files must be in the current directory of MATLAB

9. Labview file for observing induced EMF and magnetic flux

9. Labview file for observing induced EMF and magnetic flux

10. Mounting a solenoid

10. Mounting a solenoid

11. Setup for observing induced EMF and magnetic flux using a solenoid

11. Setup for observing induced EMF and magnetic flux using a solenoid

12. Mounting a Hall probe with flat face perpendicular to the magnetic axis

12. Mounting a Hall probe with flat face perpendicular to the magnetic axis

13. Setup for observing magnetic field using a Hall probe

13. Setup for observing magnetic field using a Hall probe

DETAIL

Magnetic Phase Transitions of a Ferromagnetic Alloy

1. Provided apparatus

1. Provided apparatus

2. Connecting a digital volteter to the variac

2. Connecting a digital volteter to the variac

3. Clamping a clamp meter to any one of the variac output lead

3. Clamping a clamp meter to any one of the variac output lead

4. Set the variac at 0V, switch on the mains supply and press green START button

4. Set the variac at 0V, switch on the mains supply and press green START button

5. Checking for current leakage in the control box

5. Checking for current leakage in the control box

6. Current leakage check in the pole

6. Current leakage check in the pole

7. Current leakage test in the variac

7. Current leakage test in the variac

8. Testing the emergency stop button

8. Testing the emergency stop button

9. Circuit breaker check

9. Circuit breaker check

10. Set variac at 22V. The operating voltage range lies between 22-30V

10. Set variac at 22V. The operating voltage range lies between 22-30V

10. Set variac at 22V. The operating voltage range lies between 22-30V

11. Kanthal wire attached to the magnet

Curie_12n

12. Kanthal wire snapped away

DETAIL

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