Chapter 28
Magnetic Forces and Fields
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets…
A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force…
The magnetic flux measures the number of magnetic field lines passing through a given surface area. The SI unit for magnetic flux is the weber (Wb).…
A charged particle experiences a force when moving through a magnetic field. Consider the field to be uniform and the charged particle to move…
Moving charges experience a force in a magnetic field. Since the magnetic fields produced by moving charges are proportional to the current, a…
In a magnetic field, moving charges encounter a force. If a wire contains these moving charges, i.e., if the wire is carrying a current, then a force…
The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed…
Edwin H. Hall, in the year 1879, devised an experiment that could be used to identify the polarity of the predominant charge carriers in a conducting…
Electronic devices and high-voltage wires induce magnetic fields. A magnetic field of 1,300-2,500 Gauss (0.2 Tesla) was applied to Petri dishes…
A spheroid culture is a useful tool for understanding cellular behavior in that it provides an in vivo-like three-dimensional environment. Various…