70 likes | 182 Views
Starter. Which battery terminal is positive, and which is negative?. Magnetic Field of a Coil . The magnetic field inside a coil that has N turns, is L long, and has a current of I, is given by: B = m o iN/L i = current in amps N = # of turns
E N D
Starter Which battery terminal is positive, and which is negative?
Magnetic Field of a Coil The magnetic field inside a coil that has N turns, is L long, and has a current of I, is given by: B = moiN/L i = current in amps N = # of turns L = length in meters mo = 1.25 x 10-6
Experiment Part 1 Logger-pro Using the Vernier magnetic field detector, a coil, the power supply on the circuit board, and a current sensor, determine the magnetic field inside two different coils for a given current. Use this value to determine the number of turns in each coil. N = (BL/moi)
Experiment Part 2 Vernier – Loggerpro Using the Vernier magnetic field detector: 1. Determine the magnetic field of the Earth. 2. Determine the Inclination of the field in degrees. 3. Check your data with NOAA website. 4. Determine how the magnetic field of a bar magnet depends on the distance form the magnet. Plot B vs. x.
Connection Where do you encounter magnetic coils every day?
Exit Write down the formula for the B-field in a coil and describe each term.