![]() A student lists the similarities between Earths magnetic field and the magnetic field of a bar magnet. Source: no point source, dipole required -Field intensity proportional to: n/a because no point. Direction of field lines: toward center of charge. Similarity - Field Strength: Field strength is a measure of the force experienced by a test object per unit of mass or charge. Unlike the gravitational field, which does not change significantly with time, the magnetic field is highly time dependent. force of gravitational attraction between the objects. Direction of field lines: toward center of mass. So this leads to (setting 1 kg 1 k g equal to kg C2 k g C 2) kg2 C2. So what we actually compare are 1 kg 1 k g and kg C2 k g C 2, which means only the cause of the electric field ( C C) and the cause of the gravitational field ( kg k g) are involved in the comparison. Electric fields can be either attractive or repulsive (depending on the type of charge), while magnetic fields are associated with the motion of charged particles and can change in direction.ĭifference - Forces: Gravitational fields result in a gravitational force acting on objects with mass, while electric fields lead to electric forces on charged objects, and magnetic fields result in magnetic forces on moving charged particles. Obviously, these units have a factor of m3 s2 m 3 s 2 in common. In contrast, electric and magnetic fields are associated with electrical charges and moving charges (currents). In these cases, the fields describe how a force (gravitational, electric, or magnetic) would affect an object placed at a particular point in space.ĭifference - Nature of the Field: The gravitational field is associated with the force of gravity and is always attractive. A field is a physical quantity that has a value at every point in space. ![]() Similarity - Field Concept: Gravitational, electric, and magnetic fields are all described using a field concept. The force that keeps a book on top of a table (instead of gravity pulling the book through to the ground), is a consequence of the electromagnetic force: Electrons in the tables atoms repel. For example, the gravitational force between the Earth and a person is about a hundred billion times. (2a) yields the electromagnetic force exerted on a magnetic. Here's how they are similar and different: Gravitational force is much weaker than electric force. similarities between the gravitational and electromagnetic interactions. The gravitational field is conceptually similar to the electric and magnetic fields in physics, but it arises due to gravity, not electric charges or moving charges (as in the case of electric and magnetic fields). ![]() Home iit-jee comparison between gravitational field electric field and magnetic field Comparison between Gravitational Field, Electric Field and Magnetic Field
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