Energy stored in a magnetic field , Electrical Engineering

Assignment Help:

Energy stored in a magnetic field

Consider a circuit consisting of a voltage supply,  switch,  resistor  and  a  coil  of  N turns wound on a toroid of length l, all in series.

 

208_Energy stored in magnetic field.png

With the switch open, no current flows inthe coil and therefore there is no flux produced in the core of the coil.

 

1326_Energy stored in magnetic field 1.png

 

At t=0, the switch is closed and the current builds up with time. It is not instantaneous,because the coil produces a back emf that limits the rate of rise of current

 

 

2133_Energy stored in magnetic field 3.png

 

where v = the time dependent back emf created by the coil. The instantaneous power being delivered
by the supply at time t is

vs .i=i2 R+v.i

 

986_Energy stored in magnetic field 4.png

237_Energy stored in magnetic field 5.png

 


Related Discussions:- Energy stored in a magnetic field

How you can convert a galvanometer to a voltmeter, To convert a galvanomete...

To convert a galvanometer to a voltmeter, you should add a: a) High resistance in series b) High resistance in parallel c) Low resistance in series d) Low resis

What are frequency response curves, Q. What are frequency response curves? ...

Q. What are frequency response curves? How are they made? Every amplifier has a frequency-response curve associated with it. They provide a "picture" of the performance of an a

Determine the fall-off rate, Q. A low-pass filter circuit is shown in Figur...

Q. A low-pass filter circuit is shown in Figure. Using a PSpice program and PROBE, obtain the Bode magnitude plot for the transfer function ¯H(f) = ¯V out / ¯V in for the frequ

Data bus - bus organisation , Data bus The data  bus is the  group of 8...

Data bus The data  bus is the  group of 8 bit   used  to carry data. There  line are  bidirectional data can flow  in both  directions i e form  microprocessor to  peripherals

Simulink help, I want simulink model for carrier based pwm method

I want simulink model for carrier based pwm method

Filter implementation, Using the coefficients obtained for the noisy signal...

Using the coefficients obtained for the noisy signal and the FIR filter in Q1(c)(i) implement on the TMS320VC5510DSK. You can use and modify any of the files provided in the Board

Discuss merits and demerits of macro over procedures, Discuss merits and de...

Discuss merits and demerits of Macro over procedures.  The MACRO directive informs assembler the starting of a macro which is used with ENDM directive to enclose a macro. The

Metal oxide field effect transistor, Metal Oxide Field Effect Transistor ...

Metal Oxide Field Effect Transistor The metal-oxide-semiconductor field-effect transistor (MOSFET/MOS-FET/MOS FET) is a device employed for amplifying or for switching electr

Telephony, connection of STS MUX/DMUX

connection of STS MUX/DMUX

Antenna fundamentals, Antenna Fundamentals We shall discuss here only t...

Antenna Fundamentals We shall discuss here only the fundamental concepts needed to understand the role of an antenna as a power-coupling element of a system. Figure illustrates

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd