What is the magnetic field at a point midway between the wires?

The magnetic field at a point midway between two parallel long wires carrying currents in the same direction is 10μT. If the direction of the smaller current among them is reversed, the field becomes 30μT.

What is the force per meter of a long parallel wires separated by 1 meter with each carrying 1 ampere?

The official definition of the ampere is: One ampere of current through each of two parallel conductors of infinite length, separated by one meter in empty space free of other magnetic fields, causes a force of exactly 2 × 10−7 N/m on each conductor.

Where is the magnetic field zero between two wires?

Where are the points where the magnetic field is zero? Solution: Using the right-hand rule again, allows one to see that the magnetic-field contributions from the two wires have opposite signs either above or below the wires, but not between them.

How do you calculate the magnetic force of a wire?

The force on an individual charge moving at the drift velocity vd is given by F = qvdB sin θ. Taking B to be uniform over a length of wire l and zero elsewhere, the total magnetic force on the wire is then F = (qvdB sin θ)(N), where N is the number of charge carriers in the section of wire of length l.

What is a magnetic field Class 6?

The force of attraction around a magnet, which is maximum at the poles (ends) of the magnet, is called magnetism. The area around a magnet where the magnet’s forces work is called the magnetic field. In simple words , a magnet is a object which produces a magnetic field.

How do you find the magnetic field of a wire?

By pointing one’s right thumb along the direction of the current, the direction of the magnetic field can by found by curving one’s fingers around the wire. The strength of the magnetic field depends on the current I in the wire and r, the distance from the wire.

Do two wires exert force on each other in a magnetic field?

In addition, when placed in a magnetic field, a wire carrying a current will experience a net force. Thus, we expect two current-carrying wires to exert force on each other. Consider two parallel wires separated by a distance a and carrying currents I1 and I2 in the +x-direction, as shown in Figure 9.2.1.

What is the force between two long straight and parallel conductors?

The force between two long, straight, and parallel conductors separated by a distance r can be found by applying what we have developed in the preceding sections. (Figure) shows the wires, their currents, the field created by one wire, and the consequent force the other wire experiences from the created field.

Is constant in magnitude for points that lie on a magnetic field?

Is constant in magnitude for points that lie on a magnetic field line? A magnetic field line gives the direction of the magnetic field at any point in space. The density of magnetic field lines indicates the strength of the magnetic field. Two long, straight wires are parallel and 25 cm apart.

Why does the force between two wires define the ampere?

You might expect that two current-carrying wires generate significant forces between them, since ordinary currents produce magnetic fields and these fields exert significant forces on ordinary currents. But you might not expect that the force between wires is used to define the ampere.