answersLogoWhite

0


Best Answer

According to Ampere's Law, the strength of the magnetic field around a long, straight wire carrying current is directly proportional to the current and inversely proportional to the distance from the wire at which it is measured. Assuming fixed distance from the wire (meaning that you're measuring in the same place), if you increase the current by 1.75/.25= 7 times, you will also increase the magnetic field by 7 times.

User Avatar

Wiki User

11y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How does the strength of the magnetic field around a wire change if the current in the wire is increased from 0.25 A to 1.75 A?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Which factors affect the magnetic strength of a solenoid which is carrying an electric current?

Factors affecting the magnetic field strength of a solenoid are: - length of the solenoid - diameter of the solenoid - current through the coil around the solenoid - number of turns of the coil of current around the solenoid, usually turns of wire - material in the core


What is the relationship between magnetic fields and electricity?

-- A current flowing through a conductor creates a magnetic field around the conductor. -- Moving a conductor through a constant magnetic field creates a current in the conductor. -- If there's a conductor sitting motionless in a magnetic field, a current flows in the conductor whenever the strength or direction of the magnetic field changes.


List the factors on which the strength of the magnetic field of an electromagnet depends?

The strength of an electromagnets magnetic field depends on:The type of core metalThe ability of the wire to carry current (its material and thickness)The number of turns of the wiring around the coreThe voltage/current of the electricity going through the wire.


How can the strength of an electromagnet be increased?

More currents, or more loops.


Why does more coils make an electromagnet stronger?

The illustration on the HowStuffWorks website is probably the easiest to understand. As you add coils to the electromagnet you have more and more magnetic field traveling in a certain vector (depending on which way current is flowing). It's much like a lot of physics...as you add horses to a plow the force is increased. As you add coils to an electromagnet the magnetic field increases. As I said, check out this link for better understanding. http://science.howstuffworks.com/electromagnet4.htm\ A wire with an electric current passing through it, generates a magnetic field around it, this is a simple electromagnet. The strength of magnetic field generated is proportional to the amount of current. if we were to increase the number of coils the strength of the magnetic field would increase, also increasing the strength of the magnet


How does an open or split jaw amp meter work?

It puts an iron core around a conductor, which allows the meter's circuitry to sense the strength of the magnetic field. The strength of the field around the conductor is related to the amount of current flowing.


What is produced around a wire that has a current?

Magnetic field.


How the magnetic field around a solenoid can be strengthened?

The strength of the magnetic field produced by a current carrying solenoid depends on:The number of turns - larger the number of turns, greater is the magnetism produced.The strength of the current - when current increases, magnetism also increases.Nature of 'core-material' used in making the solenoid - if we use soft-iron as a core for the solenoid, then it produces the strongest magnetism.


How does changing current affect the magnetic force on a wire suspended in a magnetic field?

Current passing through a wire in a magnetic field creates its own magnetic force in some direction. If you increase the current, force will be increased. If the direction of current is changed, direction of force will also be reversed. Direction of current is found by applying right hand rule.


What is the relationship between magnetic force and distance?

-- A current flowing through a conductor creates a magnetic field around the conductor. -- Moving a conductor through a constant magnetic field creates a current in the conductor. -- If there's a conductor sitting motionless in a magnetic field, a current flows in the conductor whenever the strength or direction of the magnetic field changes.


Is there a magnetic field around current carrying conductors?

yes.magnetic field present around the conductor.current and magnetic fields are inter related..with current we can produce magnetic field and vice versa


What factors of an electromagnet affect the strength of the magnetic field?

One of them is how many coils go around the electromagnet. also the amout of current flow< and the type of core material.