What is the difference between emf, voltage drop and
potential difference?

Answer Posted / rahul babu

potential difference is basically difference in charge b/w
two points.as a positive test charge is bring from infinity
to a given point.
while voltage drop is amont of current dissipated by an
impedance or resistace

and emf is voltage generated in case of magnetic field..

Is This Answer Correct ?    2 Yes 6 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?

891


If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021

725


At full load wat is the motor p.f And at no load will is the motor p.f?

1720


What does the term “voltage regulation” means?

631


What are stable systems?

637






Mention the methods for starting an induction motor?

638


which types of relay used in acb and vcb?

2318


if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1535


what are the major & minor faults that occur in an inverter and in UPS ? And how to repair and resolve them ?

1834


Why do we pefer VCB over OCB?What are the advantages of VCB over OCB?

2082


What is the need for a controller?

659


1- XC and the RC time constant are both measures of the reaction of C to a change in ____? 2-The power factor is a numerical ratio with a value between 0 and 1 equal to the ______________ of the phase angle. 3-When V and I are out of phase because of reactance, the product of V times I is called ______________ power 4-For _____________ inductors, the branch currents can be added algebraically. 5- The ______________ power in watts can be calculated as I^2R 6-Calculate XL with L = 30mH and f = 1kHz ( I have Xl=2piFL 2*3.141592653*1kHz*30mH =188 ohms Please check) 7-A parallel RL circuit has the values, R = 5kohms, XL = 5kohms. A voltage source of Vt = 10Vrms is connected in parallel to R and L. Determine the total current, It delivered by the voltage source Vt. 8-A series RC circuit has R = 1Mohm and C = 1microF. How long would it take for the capacitor to fully discharge if it is initially fully charged? 9-A circuit has real power = 300W and an apparent power of 500VA. Determine the power factor and phase angle. 10-The time constant for an LR series circuit is T = 0.1s and R = 10ohms. Calculate the inductance L.

2780


What are the applications of different multistage amplifiers?Plz also write advantages of these amplifiers? Thaaaaaaaaanx

2445


During FEED, you will have all the information with regards to cable. How will you calculate the MTO for MV and LV Cables? what are your considerations?

2035


Write the programming software name for LG, SIEMENS,Messung,AB

1542