The magnetic field at the center of the loop is the sum of the
field due to the loop and a straight conductor
. Direction: Using the right-hand rule: For a straight conductor, the thumb points in the direction of the current.
What is the direction of the magnetic field at the center of the coil?
When the current passes through the coil, the direction of magnetic field at the center is
along the axis of the coil
. At the other points of coil inside and beyond the magnetic field is small and appears to diverge.
How can you find the direction of a magnetic field at a given point in the magnetic line of force?
The direction of a magnetic field at a point is determined by
placing a small compass needle
. The N – pole of compass indicates the direction of magnetic field at that point.
What is the direction of the magnetic field at the point of the dot?
The direction of the force due to a magnetic field is
perpendicular to the direction of motion
. distance away from the wire, and is called the permeability of free space. Magnetic fields are measured in Teslas(T).
What is the magnetic field at the center of the loop?
Magnetic Field Produced by a Current-Carrying Circular Loop
B=μ0I2R
(at center of loop) B = μ 0 I 2 R ( at center of loop ) , where R is the radius of the loop. This equation is very similar to that for a straight wire, but it is valid only at the center of a circular loop of wire.
When current is passed through a coil of wire the magnetic lines of force at the center of the coil?
Explanation: The current passing through a circular coil of two turns produces a magnetic field
of 4μT
AS ITS CENTER. The coil is then rewound, so as to have four turns and the current passing through it is doubled.
What is the direction magnetic field lines outside the coil?
In the diagram to the right, we immediately know that the field points in the positive z direction inside the solenoid, and in
the negative z direction
outside the solenoid. We see this by applying the right hand grip rule for the field around a wire.
What is a magnetic field how can the direction?
The direction of magnetic field at a place can be
determined by using a compass needle
. A compass needle need place near a magnet gets deflected due to the magnetic force exerted by the magnet. The north an the needle of the compass indicates the direction of magnetic field at the point where it is placed.
What is the direction of the magnetic field lines?
The lines are directed from
north pole to the south pole outside the magnet
while they are directed from south pole to north pole inside the magnet. A tangent drawn on a magnetic field line gives the direction of the magnetic field at that point.
Where is the magnetic field the strongest?
The strongest external magnetic fields are
near the poles
. A magnetic north pole will attract the south pole of another magnet, and repel a north pole.
What is Fleming’s left hand rule?
Fleming’s left – hand rule states that
if we stretch the thumb, middle finger and the index finger of the left hand in such a
way that they make an angle of 90 degrees(Perpendicular to each other) and the conductor placed in the magnetic field experiences Magnetic force.
Which direction does the magnetic field point at location 2?
Using the right-hand rule to determine the direction of the magnetic field around a wire, the magnetic field will point in the
clockwise direction
.
What is magnetic field due to an infinite linear current carrying conductor?
Magnetic field due to an infinitely long straight current carrying wire – definition.
B=(2πr)μ0I
where B is the magnitude of magnetic field, r is the distance from the wire where the magnetic field is calculated, and I is the applied current.
How do you find the current in a circular loop?
Field at Center of Current Loop
B = x 10^ Tesla = Gauss
. B = x 10^ Tesla = Gauss. The current used in the calculation above is the total current, so for a coil of N turns, the current used is Ni where i is the current supplied to the coil. The Earth’s magnetic field at the surface is about 0.5 Gauss.
What is the magnetic field at the Center of a solenoid?
Inside a solenoid the magnetic field lines will be straight lines and the field will be strong. Outside the solenoid the magnetic field will be weak and the field lines will curl up to form closed loops. Hence, the magnetic field inside a solenoid
will be uniform
.
