The diagram shows a setup for inducing a current in a wire. A wire connected to the red and blue terminals on a grey box, which contains a white box with a needle pointing to the right with the number 0 above the center of the white box. The wire passes through a 3 sided trough with a bar magnet running on each side of the top inside of the trough. There the wire is labeled with an upward pointing arrow and the words Direction of movement of wire. Which change would cause the needle on the ammeter to point to the left of the zero? making the wire thicker adding coils to the wire disconnecting the wire from one end of the ammeter moving the wire downward through the magnetic field

A change which would cause the needle on the ammeter to point to the left of the zero is: D. moving the wire downward through the magnetic field.

What is an ammeter?

An ammeter can be defined as an instrument that is designed and developed for the measurement of either a direct current (DC) or alternating current (AC) in an electric circuit.

Generally, a needle (pointer) that is attached to a magnetic coil moves in opposite direction (deflects) for each direction of current flowing through an ammeter, especially due to the polarized magnetic field.

In conclusion, a change which would cause the needle on the ammeter to point to the left of the zero is moving the wire downward through the magnetic field.

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