The search coil inside a solenoid is used to detect any changes in magnetic field strength. It can also be used to measure the strength and direction of a magnetic field.
A search coil is a loop of wire that is connected to an electrical circuit. When the coil is placed inside a solenoid, any changes in the magnetic field will induce a current in the coil, which can be measured by the circuit. This current can then be used to determine the strength and direction of the magnetic field.
Yes, a search coil inside a solenoid can be used to detect non-magnetic objects as long as they are conductive. This is because the coil measures changes in current, which can be induced by any conductive material.
One advantage is that it can detect very small changes in magnetic field strength, making it useful for sensitive measurements. Another advantage is that it is a non-invasive method, meaning it does not physically touch the object being measured.
One limitation is that it can only detect changes in magnetic field strength, and not the absolute value. Additionally, the size and shape of the coil can affect its sensitivity and accuracy.