Magnetic field of single coils / Biot-Savart's law with a teslametr

Principle

The magnetic field along the axis of wire loops and coils of different dimensions is measured with a teslameter (Hall probe). The relationship between the maximum field strength and the dimensions is investigated and a comparison is made between the measured and the theoretical effects of position.

Benefits

• Simple setup which allows an easy measurement of the magnetic flux density depending on different parameters
• No calibration needed, Teslameter is calibrated  up to 1 T

Tasks

1. To measure the magnetic flux density in the middle of various wire loops with the Hall probe and to investigate its dependence on the radius and number of turns.
2. To determine the magnetic field constant.
3. To measure the magnetic flux density along the axis of long coils and compare it with theoretical values.

Learning objectives

• Wire loop
• Biot-Savart's law
• Hall effect
• Magnetic field
• Induction
• Magnetic flux density