5. One of the results of Faraday's observations on induction was the spark gap. This is just a transformer that steps up the primary voltage to many thousands of volts in order to produce electric sparks several inches long. Let's do a little analysis of a spark gap. The primary coil of this spark gap has 100 turns of copper wire with a resistance of 2.6 2. The secondary coil consists of 30,000 turns of wire with a resistance of 5 k.(The following calculation is VERY approximate since there are many complicating factors we have not discussed.) When a 12 V battery is connected to the primary coil what current will run through the coil? a. b. C. What will be the strength of the magnetic field through the primary coil? If the primary coil has a radius of 1 cm, what is the magnetic flux through the coil? d. When the battery is disconnected, assume it takes 2 milliseconds for the magnetic field to fall to 0. What voltage is induced in the secondary coil?

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Voltage Across Inductor

An actor is a passive electrical component that consists of a coil bent in the form of wire which uses electromagnetism to produce electric current through the coil. When the electric current flows through a conductor that is the coil, a magnetic flux is developed around the conductor. This flow of current through the coil creates a magnetic field based on Fleming's Right-hand thumb rule. If there is any decrease in the current passing through the inductor, then the magnetic field will also decrease and energy is released through the generation of electric current. There is also a secondary voltage inducing in the same coil due to the magnetic flux, since it opposes any changes in the electric current flowing through the circuit. An inductor is also called choke, coil, or solenoid. A choke is designed to block certain frequencies when the DC current passes. A winding coil is coated with insulation to give extra insulation and protect the circuit. They are usually tightly wrapped around a central core which is cylindrical in nature so that the magnetic flux can be induced. The solenoid is a three-dimension coil that is used to exhibit electromagnetism when the magnetic field is developed due to the current flowing through the coil. The sign convention of the inductor is the same as the power dissipating device. When the current flows into the positive side of the voltage across the inductor, the value is positive and the inductor dissipates power whereas when the inductor releases the power back to the circuit, the current has a negative sign convention.