Final answer:
Never scan a tx/rx coil with 1) A metal object, 3) A magnetic object, and 4) A wooden object
Step-by-step explanation:
This is because these objects can interfere with the electromagnetic fields and disrupt the functioning of the coil. Metal objects can create eddy currents, which can generate their own magnetic fields and interfere with the coil's magnetic field. Magnetic objects can attract or repel the coil, affecting its performance. Wooden objects may not have a significant impact on the coil, but it is still recommended to avoid them to minimize any potential interference.
Instead, it is best to use a plastic object when scanning a tx/rx coil. Plastic is a non-magnetic material that does not generate its own electromagnetic fields, making it ideal for this purpose. Therefore the correct answer is 1) A metal object, 3) A magnetic object, and 4) A wooden object