Please chrck my answer!
How does a galvanometer use a magnetic field to indicate the strength of an electric current?
When a current is passed through a magnetic field, it goes through a coil and to a galvanometer.
1. A
2. C
3. D
4. C
5. B
6. D
7. D
8. B
9. C
10. B
11. D
12. D
13. C
14. C
15. Repel..attract
16. Circuit
17. Bolt current
18. North Pole
19. Perpendicular
20. Current
21. Alternating currents
22. In the middle
23. Direct current flows in one direction .. alternating current can reverse direction
24. Circuit breaker stops the flow of electricity
25. Part of the Earth's magnetic field
26. Positive particles go to negative pole and vise versa
Seems right, to me.
Yes Mara is correct! :) Feel free to use her answer just use ur own words please!
To check your answer, let's go through the concept of how a galvanometer uses a magnetic field to indicate the strength of an electric current:
1. First, let's define a galvanometer: A galvanometer is an instrument used to detect and measure small electric currents. It relies on the principle of electromagnetic induction.
2. When a current-carrying conductor is placed in a magnetic field, a force is exerted on the conductor due to the interaction between the magnetic field and the electric current. This force is known as the Lorentz force and is given by the equation F = qvB, where F is the force, q is the charge of the particles, v is the velocity of the particles, and B is the magnetic field strength.
3. In a galvanometer, there is a coil of wire that is suspended between the poles of a permanent magnet.
4. When an electric current flows through the coil, a magnetic field is created around the coil according to Ampere's law.
5. Due to the interaction between the magnetic field created by the coil and the permanent magnet's field, a force is exerted on the coil, causing it to rotate.
6. The amount of rotation of the coil is proportional to the strength of the electric current flowing through it.
7. The rotating coil is attached to a pointer, which moves over a calibrated scale, indicating the magnitude of the electric current.
8. Therefore, the galvanometer uses the magnetic field created by the current-carrying coil and the permanent magnet's field to indicate or measure the strength of the electric current passing through it.
Now, let's review your statement:
"When a current is passed through a magnetic field, it goes through a coil and to a galvanometer."
Your statement is partially correct. The current does pass through a coil, but it is the interaction between the magnetic field created by the coil and the permanent magnet's field that allows the galvanometer to indicate the strength of the electric current.
I hope this explanation helps clarify the concept for you!