A wire connected to red and green terminals on a grey box, which contains a white box with a needle pointing up. The wire passes through a 3 sided trough and is there labeled with a downward pointing arrow

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asked May 22, 2022 147k views

5 votes

A wire connected to red and green terminals on a grey box, which contains a white box with a needle pointing up. The wire passes through a 3 sided trough and is there labeled with a downward pointing arrow and the words Direction of movement of wire. You are trying to induce a current and have put together the setup shown. What needs to be added in order for current to flow in the wire?

100 points, help asap