What happens to the direction of the magnetic field about an electric current when the direction of the current is reversed?

Q: How does angle of dip change as line goes from magnetic pole to magnetic equator of the earth?

A: Angle of dip is defined as the angle between the direction of total earth's magnetic field to that…

Q: When is the force experienced by a current–carrying conductor placed in a magnetic field largest?

A: The formula for the magnetic force acting on a current-carrying conductor placed in a magnetic field…

Q: Why don’t two magnetic field lines intersect each other?

A: Two magnetic field lines do not intersect each other.

Q: If an electric charge is placed in a magnetic field, the magnetic field will exert a force on the…

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Q: An electron is moving with constant velocity in a region of space with uniform magnetic field as…

A: The direction of velocity is given : Ve→ towards right ,

Q: What is the direction of the magnetic field if it is known to be perpendicular to the electric fiel

A: We know  that  One curl equation states that if the electric field tends to rotate, it will induce a…

Q: A proton is located at an altitude of 1 km above the Earth's surface. When it is fired downwards…

A: Given: A proton located at an altitude of 1 km above the Earth's surface. It is fired downward and…

Q: The magnetic field due to the top wire points in which direction?

A: Thumb rules state that if thumb of the right hand points along direction of current, then the…

Q: A piece of aluminum is dropped vertically downward between the poles of an electromagnet. Does the…

A: When conductors are placed in a varying magnetic field the magnetic flux will induce an…

Q: A wire is placed within a magnetic field, and a current starts to flow through the wire. Which…

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Q: A magnetic field CANNOT: O change the momentum of a charge affect a charge in any way change the…

A: When a charge enters into magnetic field then a force starts acting on it called Lorentz force.  It…

Q: Will dropping a magnet down a long copper tube produce a current in the walls of the tube? And why?

A: When the magnet is dropped down the long copper tube, it takes considerable time to exit the tube.…

Q: A current running through the bar suspended in a magnetic field causes the bar to experience a force…

A: The force on a current-carrying wire in the magnetic field is given by Where B = Magnetic field I =…

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.