The current flows through the moving coil galvanometer, and this causes the needle to deflect by a certain amount. And charge will continue to flow around the circuit in a clockwise direction until it gets back to the cell, which completes the circuit.
A wire coil is connected to a galvanometer. When you push a magnet towards the center of the coil, then pull it away, the galvanometer needle deflects in one direction, then the other. How far the needle deflects depends on the strength of the magnet and how fast you move it.
According to the question, there's a simple law which we need to follow, called Lenz's Law.
What is Lenz's Law ?
It was given by a scientist called Lenz, which states that whenever a magnet, or a bar magnet specifically, is brought near the circuit, with the galvanometer attached to it, the galvanometer points at the opposite direction ie outwards.
When the magnet is pulled away from the circuit, the deflection in the galvanometer shows towards the magnet.
In this question, we have the first option.
The north pole of the magnet is being brought towards the circuit. So, the galvanometer (according to the screen you're facing), points outwards or leftwards, because the magnet is drawn nearer, leftwards.
Had the magnet been pulled away, the galvanometer would have started pointing at the right side (of your screen) i.e, towards the magnet.
Answers & Comments
Answer:
The current flows through the moving coil galvanometer, and this causes the needle to deflect by a certain amount. And charge will continue to flow around the circuit in a clockwise direction until it gets back to the cell, which completes the circuit.
A wire coil is connected to a galvanometer. When you push a magnet towards the center of the coil, then pull it away, the galvanometer needle deflects in one direction, then the other. How far the needle deflects depends on the strength of the magnet and how fast you move it.
Verified answer
Answer:
Explanation:
According to the question, there's a simple law which we need to follow, called Lenz's Law.
What is Lenz's Law ?
In this question, we have the first option.
Therefore, the needle will point leftwards.