When current flows through a moving-coil galvanometer, the force exerted on the pointer depends on the: i. strength of the current. ii. magnetic field strength. iii. length of the coil. Which of the statement(s) above is/are correct?

Sulaimant

4 years ago

answer is D, because the force depends on the lenght, magnetic strenght and current from F=BIL

Derek644222

2 years ago

1. The strength of the current: When the current flowing through the coil increases, the force exerted on the pointer also increases. This is because the magnetic field created by the current interacts with the magnetic field of the permanent magnet, resulting in a stronger force.

2. The magnetic field strength: The strength of the magnetic field produced by the permanent magnet also affects the force on the pointer. A stronger magnetic field will exert a greater force on the coil, causing the pointer to move more.

3. The length of the coil: The length of the coil in the galvanometer also plays a role in determining the force on the pointer. A longer coil will have more turns, resulting in a larger area for the magnetic field to interact with. This leads to a stronger force on the pointer.

So, all three statements (i. strength of the current, ii. magnetic field strength, and iii. length of the coil) are correct and contribute to the force exerted on the pointer in a moving-coil galvanometer.
hence option D is correct

pearl_4

3 months ago

app wey suppose help us dey give wround answer