Understand its induction as a quantitative index of magnetic field. For its measurement take the magnetometer and install its sensor in the necessary point of space then take readings. Also it can be done by means of a magnetic needle for what calculate its magnetic moment. At influence of variation magnetic field in the conductor there is an EMF. Measure it and calculate induction of magnetic field.
It is required to you
- conductor, sensitive voltmeter, solenoid (long coil), magnetic needle and magnetometer.
Instruction
1. Measurement of magnetic field magnitometromdlya it take the magnetometer which is called also teslametry, it will measure magnetic field in any point, it is enough to bring in it the sensor and on a scale or the screen indications will appear.
2. Measurement of magnetic field to a solenoidaposchitayta quantity of rounds and length of the solenoid in meters. After that, connect it to a current source, having turned on the ampermeter in a chain, take from it readings of current in amperes. Then increase quantity of rounds of the solenoid by value of current, divide the received number into solenoid length, and increase result by 1.26*10-6 (0.00000126). Induction of magnetic field of the solenoid will be result.
3. Measurement of magnetic field a reference magnet Take the thin magnetized needle. Fix it on a tortional dynamometer and bring in magnetic field. The needle will orient in a certain direction. Rotate dynamometer thread until the needle does not move from position of balance, take readings. It will be experimental force. After that take the solenoid, and bring a needle to one of its faces where the field has straight-line characteristics. Changing current by means of a rheostat or any other way, achieve that force with which the magnetic needle moves became equal experimental. Calculate induction of magnetic field of the solenoid as it is stated above. They it will be equal to induction of the measured magnetic field.
4. Measurement of magnetic field with the help to a provodnikapomestita the conductor in magnetic field of a permanent magnet. Measure length of that its part which is directly in the field. After that, moving it with the fixed speed, take readings from a millivoltmetr who will show presence of EMF. For calculation of magnetic induction EMF value in volts, divide into value of speed in meters per second and length of the conductor in meters.
5. Measurement of magnetic field with the help to a provodnikaizmerta current in the conductor by means of the ampermeter, then measure its length and place in magnetic field. By means of a dynamometer measure force which began to affect it. For obtaining value of induction of magnetic field divide value of force in newtons into current in amperes and length of the conductor in meters.