Where is maximum torque produced in magnetic field?
The torque τ is maximum when the normal of the loop is perpendicular to the magnetic field, and zero when the normal is parallel to the field.
What is the torque experienced by a current carrying loop kept in a magnetic field?
Let us consider a rectangular loop such that it carries a current of magnitude I. If we place this loop in a magnetic field, it experiences a torque but no net force, quite similar to what an electric dipole experiences in a uniform electric field.
What is importance of radial magnetic field in a moving coil galvanometer?
The radial magnetic field is applied to a moving coil galvanometer to produce a constant torque on the coil. It is applied to measure the relation between the current and the angle which is non-linear such that the current cannot be measured easily.
What is meant by magnetic moment?
The magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. The direction of the magnetic moment points from the south to north pole of the magnet (inside the magnet). The magnetic field of a magnetic dipole is proportional to its magnetic dipole moment.
What are the elements of Earth’s magnetic field explain their meanings?
Summary
| Component | Definition |
|---|---|
| H | Magnetic field component parallel to the earth’s surface (Points towards the magnetic south pole) |
| α | Magnetic declination: Angle between true north and magnetic north |
| θ | Magnetic Inclination: Angle measured from horizontal to magnetic field vector. It is 90 deg at magnetic poles. |
What are the three magnetic elements?
Since then only three elements on the periodic table have been found to be ferromagnetic at room temperature—iron (Fe), cobalt (Co), and nickel (Ni).
What are the three elements of Earth’s magnetic field?
The three magnetic elements of earth are:
- Magnetic declination ( )
- Magnetic inclination or magnetic dip ( ), and.
- Horizontal component (H).
What is the vertical component of Earth’s magnetic field?
This condition is satisfied at the equator, as the magnetic field of the earth is parallel to the surface of the earth which means that the angle is zero. Now substituting zero in the equation we get zero. Bv=Bsin(0∘)=0. Hence at the equator, the vertical component of the earth’s magnetic field is zero.
What is Earth’s magnetic field made of?
Scientists know that today the Earth’s magnetic field is powered by the solidification of the planet’s liquid iron core. The cooling and crystallization of the core stirs up the surrounding liquid iron, creating powerful electric currents that generate a magnetic field stretching far out into space.
What is the value of horizontal component of Earth’s magnetic field?
The value of horizontal component of the earth’s magnetic field at a point is 0.5×10−4tesla and the angle of dip is 45∘.
What is horizontal component of earth magnetic field where is it maximum?
equator
What is the value of horizontal component of Earth’s magnetic field in SI units?
The value of horizontal component of the earth’s magnetic field at a point is 0. 5×10−4 tesla and the angle of dip is 45∘.
What is angle of declination?
1 : the angle made by a descending line or plane with a horizontal plane. 2 : the angle between the direction indicated by a magnetic needle and the true meridian. — called also magnetic declination.
Which of the following is responsible for the earth’s magnetic field?
earth’s core
How magnetic field of earth is created?
On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet.
What happens when a magnetic field collapses?
When the current in a circuit is switched off, the induced magnetic field begins to collapse. As the field is collapsing, it generates voltage in the direction that momentarily prolongs the main current flow. When the induced magnetic field is fully collapsed, the induced voltage and current flow cease.