Investigation of Magnetic Fields by Search Coil

When the search coil is connected to a CRO, the corresponding induced e. m. f. and hence magnetic field magnitude can be determined.

Precautions for magnetic field around a straight wire

Order custom essay Investigation of Magnetic Fields by Search Coil with free plagiarism report

450+ experts on 30 subjects Starting from 3 hours delivery

Get Essay Help
1. The wire should belong
2. The distance(r) should much smaller than the length of the wire.
3. The centre of the search coil was placed 1 cm away from the straight wire. The search coil was at the same level and perpendicular to the straight wire. The CRO setting was adjusted to display a whole trace on its screen.
4. The time base of the CRO was switched off. The length of the vertical trace shown on the CRO was recorded, which represents the induced peak-to-peak e. m. f. (V) in the search coil and also the magnetic field around the straight wire.
5. The steps 2 to 4 were repeated with the other values of current (I) from the signal generator in steps of 0. 1A. Then, the results were tabulated.
6. A graph of the induced e. m. f. (V) against the current(I) as plotted.
7. The steps 2 to 4 were repeated with the other values of distances (r) of the search coil away from the straight wire. The results were tabulated.
8. A graph of the induced e. m. f.  is plotted.
9. The frequency of the signal generator was varied to change the sensitivity of the search coil. B. Magnetic field around a slinky solenoid
10. The circuit as shown in Fig. C15. 2 and a lateral type search coil to a CRO was connected. The stretched length of the solenoid is 1 m.
11. The signal generator was turned on and was set to 0. 5A and 5kHz.
12. The search coil was placed at the centre of the solenoid. Make sure that the search coil was perpendicular to the solenoid. The variation of induced e. m. f. was shown on the CRO.
13. Step 12 was repeated with placing the search coil at the end of the solenoid, across its cross-section and along its length.
14. The search coil was placed at the centre of the solenoid again. The time base of the CRO was switched off. The length of the vertical trace shown on the CRO was recorded, which represents the induced peak-to-peak e. m. f. (V) in the search coil and also the magnetic field around the solenoid.

Don't let plagiarism ruin your grade

Run a free check or have your essay done for you

Check my essay Hire Writer