Answer:
a) The pattern in the results shows that as the potential difference (V) increases, the number of paper clips held also increases. In other words, there is a direct relationship between the potential difference and the number of paper clips held. As the potential difference increases, more current flows through the coil, resulting in a stronger magnetic field. This stronger magnetic field attracts and holds a greater number of paper clips.
b) When the current is switched off, the magnetic field produced by the coil disappears. As a result, the paper clips that were previously held by the magnetic field will no longer be attracted and held in place. They will fall off the coil due to the absence of the magnetic force. The paper clips will be released and will no longer be held by the coil.
