Remembering that your transformer has twice as many turns in the secondary coil as in the primary coil, what is the ideal value of Vs/Vp?

Q: A power transmission line feeds input power at 2300 V to a stepdown transformer with its primary…

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Q: A typical wall outlet voltage in the United States is 120 volts. Personal MP3 players require much…

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Q: A step-down transformer (turns ratio =1:8) is used with an electric train to reduce the voltage from…

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Q: 1) A voltage is varied in a primary solenoid with 2900 +/- 100 turns of coil. The length of the…

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Q: In a coil with an inductance of 5 mi, the current changes in 0.1 ms by 0.2 A. How much…

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Q: A step-down transformer produces a voltage of 6.0 V across thesecondary coil when the voltage across…

A: Given data The initial voltage across the secondary coil of a step-down transformer is: VS_1 = 6 V…

Q: If an alternator coil is 13 cm in diameter and is spinning at 1150 revolutions per minute in a 0.13…

A: Using Faraday’s law, the emf induced is,

Q: A simple AC generator consists of 20 coils of wire with an area of 1000cm2 and placed in a region…

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Q: The primary coil of a transformer is coupled to DC power supply (a battery) that provides an…

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Q: How fast (in rad/s) must a 92-turn coil spin in a 0.039 T field to create a peak voltage of 8.3 V?…

A: Given number of turns = N = 92 strength of magnetic field = B = 0.039 T peak voltage = Vmax = 8.3 V…

Q: In a non-ideal transformer, provide a physical explanation as to why the current in the primary coil…

A: consider the transformer arrangement as shown

Q: At what angular velocity in rotation/min will the peak voltage of a generator be 540 V, if its…

A: ε0 = 540 V N = 420 turns  d = 6.3 cm = 0.063 m B = 0.290 T To find = Angular velocity in rpm

Q: A sense coil is placed in the middle of a current spiral. The angle between the surface normal of…

A: Direction of the Magnetic field is parallel to the current spiral axis.

Q: A simple AC generator consists of 20 coils of wire with an area of 1000 cm² and placed in a region…

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Q: The primary coil of a transformer is connected to a standard wall socket. A resistance R is…

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Q: As the coil of wire in the generator spins, an output potential difference is induced. Explain how…

A: Given that As the coil of wire in the generator spins, an output potential difference is induced. To…

Q: A step down transformer produces produces a voltage of 6 volts across the sec- ondary coil when the…

A: voltage in primary, Vp = 120 V  voltage in secondary, Vs = 6 V

Q: The primary coil of an ideal transformer is connected to a 120 V source and draws 1.0 A. The…

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Q: A bicycle generator rotates at 1500 rad/s, producing an 21.0 V peak emf. It has a 1.30 by 3.50 cm…

A: We have Length of the rectangular coil, L=1.30×10-2m The breadth of the coil, B=3.50×10-2m E0=21.0V…

Q: S When a magnet is plunged into a coil at speed v, as shown in the above figure, a voltage is…

A: Here given when the magnet is plunged into the coil then the speed is v.  We have to find the…

Q: A 140 V emf is across a transformer's 190-turn primary coil.  How many turns should the secondary…

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Q: A wire loop moves translationally (no rotation) in a uniform magnetic field. Is there an emf induced…

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Q: A generator has a 460-turn coil that is 10 cm long and 12 cm wide. The coil rotates at 9.0 rotations…

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Q: A 120V e.m.f is across a transformer's 200-turn primary coil. How many turns should a secondary coil…

A: given is  input voltage = 120 v output voltage 30 v turns on primary coil = 200 turns on secondary…

Q: The current in the secondary coil of a step-up transformer is 0.86 A when the current in the primary…

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Q: At what angular velocity in rpm will the peak voltage of a generator be 480 V, if its 500-turn, 8.00…

A: Using the equation for the peak emf, ε=NABωω=εNAB=εNπd24B

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.