When the magnet is pulled down and released, it starts to oscillate through the coil of wire. This movement of the magnet changes the magnetic field through the coil. According to Faraday's law of electromagnetic induction, a changing magnetic field induces an electromotive force (EMF) in a conductor, in this case, the coil of wire.

As the magnet moves through the coil, it induces an EMF in the coil, which causes a current to flow. The direction of the current depends on the direction of the movement of the magnet. When the magnet moves down, the current flows in one direction, and when the magnet moves up, the current flows in the opposite direction.

The galvanometer is a device used to detect and measure small amounts of current. So, when the current flows through the coil, the needle of the galvanometer moves. The direction of the needle's movement depends on the direction of the current. When the magnet moves down and the current flows in one direction, the needle moves in one direction. When the magnet moves up and the current flows in the opposite direction, the needle moves in the opposite direction.

So, as the magnet oscillates through the coil, the needle of the galvanometer oscillates back and forth around the zero position, indicating the changing direction of the current. The speed of the needle's movement depends on the speed of the magnet's movement. The faster the magnet moves, the faster the needle moves.

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When the magnet is pulled down and released, it starts to oscillate through the coil of wire. This movement of the magnet changes the magnetic field through the coil. According to Faraday's law of electromagnetic induction, a changing magnetic field induces an electromotive force (EMF) in a conductor, in this case, the coil of wire.

As the magnet moves through the coil, it induces an EMF in the coil, which causes a current to flow. The direction of the current depends on the direction of the movement of the magnet. When the magnet moves down, the current flows in one direction, and when the magnet moves up, the current flows in the opposite direction.

The galvanometer is a device used to detect and measure small amounts of current. So, when the current flows through the coil, the needle of the galvanometer moves. The direction of the needle's movement depends on the direction of the current. When the magnet moves down and the current flows in one direction, the needle moves in one direction. When the magnet moves up and the current flows in the opposite direction, the needle moves in the opposite direction.

So, as the magnet oscillates through the coil, the needle of the galvanometer oscillates back and forth around the zero position, indicating the changing direction of the current. The speed of the needle's movement depends on the speed of the magnet's movement. The faster the magnet moves, the faster the needle moves.

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When the magnet is pulled down and released, it starts to oscillate through the coil of wire. This movement of the magnet changes the magnetic field through the coil. According to Faraday's law of electromagnetic induction, a changing magnetic field induces an electromotive force (EMF) in a conductor, in this case, the coil of wire.

As the magnet moves through the coil, it induces an EMF in the coil, which causes a current to flow. The direction of the current depends on the direction of the movement of the magnet. When the magnet moves down, the current flows in one direction, and when the magnet moves up, the current flows in the opposite direction.

The galvanometer is a device used to detect and measure small amounts of current. So, when the current flows through the coil, the needle of the galvanometer moves. The direction of the needle's movement depends on the direction of the current. When the magnet moves down and the current flows in one direction, the needle moves in one direction. When the magnet moves up and the current flows in the opposite direction, the needle moves in the opposite direction.

So, as the magnet oscillates through the coil, the needle of the galvanometer oscillates back and forth around the zero position, indicating the changing direction of the current. The speed of the needle's movement depends on the speed of the magnet's movement. The faster the magnet moves, the faster the needle moves.

Fig 9.1 shows a magnet on the end of a spring and a coil of wire connected to a sensitive center-zero galvanometer. The magnet can move freely through the coil. The magnet is pulled down and released. Describe and explain what happens to the needle of a sensitive galvanometer.

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