Here are the second exam and solutions for 2015.
... immediately when the switch is closed compare to when it has been closed for a very long time? When the switch is closed, there is no charge yet in the capacitor and current flow through it as if it were a wire. After a certain amount of time, the capacitor is fully charged and no current flows thro ...
... immediately when the switch is closed compare to when it has been closed for a very long time? When the switch is closed, there is no charge yet in the capacitor and current flow through it as if it were a wire. After a certain amount of time, the capacitor is fully charged and no current flows thro ...
PPT - Mr.E Science
... Magnetic Poles – the ends of the magnet, area where the magnetic effect is the strongest. If a bar magnet is suspended by a thread or string, it will align itself so that one strong end points north and the other points south, hence the names for the “North” and “South” poles of the magnet. Like pol ...
... Magnetic Poles – the ends of the magnet, area where the magnetic effect is the strongest. If a bar magnet is suspended by a thread or string, it will align itself so that one strong end points north and the other points south, hence the names for the “North” and “South” poles of the magnet. Like pol ...
Magnets
... Magnetic Poles – the ends of the magnet, area where the magnetic effect is the strongest. If a bar magnet is suspended by a thread or string, it will align itself so that one strong end points north and the other points south, hence the names for the “North” and “South” poles of the magnet. Like pol ...
... Magnetic Poles – the ends of the magnet, area where the magnetic effect is the strongest. If a bar magnet is suspended by a thread or string, it will align itself so that one strong end points north and the other points south, hence the names for the “North” and “South” poles of the magnet. Like pol ...
Electricity and Magnetism
... destroyed. An object becomes electrified because the electric charge is transferred from one object to another. One object gains some negative charge. The other object gains the same amount of positive charge. ...
... destroyed. An object becomes electrified because the electric charge is transferred from one object to another. One object gains some negative charge. The other object gains the same amount of positive charge. ...
Homework #5 assignment
... (b) Now a resistive wire is connected between the plates, along the x axis, so that the capacitor slowly discharges. The current through the wire will experience a force due to the magnetic field. From this force, integrate with respect to time to find the total momentum delivered to the wire during ...
... (b) Now a resistive wire is connected between the plates, along the x axis, so that the capacitor slowly discharges. The current through the wire will experience a force due to the magnetic field. From this force, integrate with respect to time to find the total momentum delivered to the wire during ...
Electric current
An electric current is a flow of electric charge. In electric circuits this charge is often carried by moving electrons in a wire. It can also be carried by ions in an electrolyte, or by both ions and electrons such as in a plasma.The SI unit for measuring an electric current is the ampere, which is the flow of electric charge across a surface at the rate of one coulomb per second. Electric current is measured using a device called an ammeter.Electric currents cause Joule heating, which creates light in incandescent light bulbs. They also create magnetic fields, which are used in motors, inductors and generators.The particles that carry the charge in an electric current are called charge carriers. In metals, one or more electrons from each atom are loosely bound to the atom, and can move freely about within the metal. These conduction electrons are the charge carriers in metal conductors.