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Is magnetic field strength directly proportional to the coil or the current?
Wiki User
∙ 11y ago
The strength of a magnetic field won't be directly proportional to the turns in the coil. It is more correct to say that field strength is directly proportional to current through the windings of the coil. There are some "limiting factors" that will not allow this to be a hard and fast rule, but it is essentially correct.
AnswerMagnetic field strength (symbol: H) is defined as the magnetomotive force per unit length of a magnetic circuit. As magnetomotive force is the product of the current flowing through a winding and the number of turns, then, yes, magnetic field strength is proportional to both the current and the number of turns -but this is ONLY true over the straight part of the magnetisation curve (i.e. before it goes into saturation).
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoAs current I flows through a wire of infinite length then the magnetic field induction at a distance a from the wire is given by B = 2*10^-7 * I / a
The direction of the magnetic field induction will be perpendicular to the plane containing the wire and radius vector. We have to follow right handed cork screw rule to get the direction of magnetic field induction.
Wiki User
∙ 11y agoMagnetic field induction in tesla around a current carrying condutor with current I at distance a is given by 2 * 10-7 *(I / a) tesla.
If the wire is of finite length then same value is given
as 10-7 *{I /a} (sin@1 + sin @2)
Wiki User
∙ 14y agoThe strength of the mag field is proportional to the number of loops
Wiki User
∙ 13y agoI think that the more coils and the greater amount of current, the bigger the magnetic field and the greater distance it can reach, but I am not sure so don't take my word for it.
Wiki User
∙ 12y agoYep, stronger current means stronger pull, which means stronger range.
Wiki User
∙ 11y agoNo, Current is directly proportional to the magnetic field produced. More current will produce stronger magnetic field. And Stronger magnetic field will produce more current through the coil.
Wiki User
∙ 10y agoNo, it's an inverse-square
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How do the size of the current in the coil affect the strength of a electromagnet?
It's directly proportional.
True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?
F=N*I so directly proportional
What is joule's law of heating?
The heat produced due to electric current through a resistance is i) directly proportional to the square of the current ii) directly proportional to the resistance value of the conductor iii) directly proportional to the time of flow of current.
How are current and voltage related are they directly proprtional or inversely proportional?
Current and Voltage are directly proportional. V=voltage, I=current, R=resistance V=I*R
Is there a direct or inverse proportion between voltage and resistance?
voltage is directly proportional to resistance, and the current is inversely proportional to resistance. According to Ohm's Law, current is directly proportional to voltage.
How the magnetic field of an electromagnet defends on the current and the number of coils?
The magnetic field of an electromagnet is directly proportional to both the current passing through its coils and the number of coils. Increasing either the current or the number of coils will result in a stronger magnetic field, while decreasing them will weaken the magnetic field. This relationship is described by Ampere's law and the concept of magnetic flux.
How do the size of the current in the coil affect the strength of a electromagnet?
It's directly proportional.
True or False The strength of the magnetic poles in an electromagnet decreases with an increase in the number of turns of wire and the current flowing through them.?
F=N*I so directly proportional
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?
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.
Relation between voltage speed and current in alternating current motor?
voltage is inversly proportional to speed speed and current are directly proportional to each other but voltage and current are directly proportional to each other..
What is joule's law of heating?
The heat produced due to electric current through a resistance is i) directly proportional to the square of the current ii) directly proportional to the resistance value of the conductor iii) directly proportional to the time of flow of current.
The statement that current is directly proportional to voltage and inversely proportional to resistance is known as whose law?
The statement current is directly proportional to voltage and inversely proportional to resistance is known as Ohm's Law.
Does a change in the flow of current through a conductor causes a change in the electromagnetic field surrounding the conductor?
Yes. The strength of the magnetic field surrounding a conductor is proportional to the magnitude of the current in the conductor.
How are current and voltage related are they directly proprtional or inversely proportional?
Current and Voltage are directly proportional. V=voltage, I=current, R=resistance V=I*R
Is torque directly proportional to applied voltage?
Current is directly proportional to applied voltage. Ohm's law.
Why current is directly proportional to voltage?
Ohm's Law: Current = Voltage times resistance, hence current is directly proportional to voltage.
Is there a direct or inverse proportion between voltage and resistance?
voltage is directly proportional to resistance, and the current is inversely proportional to resistance. According to Ohm's Law, current is directly proportional to voltage.
