Resistors in dc circuits, Physics

Assignment Help:

Resistors in dc circuits:

Components are said to be in series when they are connected end-to-end providing only one path for the current.  Thus the same current passes through all the components (including the power supply).  See diagram below.

2204_resiatnce in dc circuit.png

When a current flows through a resistor (or a component having resistance) there is a potential difference between its ends.  Thus where two or more resistors are connected in series the potential difference between the extreme ends is the sum of the individual potential differences.

1105_resiatnce in dc circuit1.png

Hence E = V1 + V2 + V3

But from Ohm's Law V = IR

Therefore E  =  IRTOTAL

So     V1 = IR1             V2 = IR2             V3 = IR3

Thus IRTOTAL      =  IR1 + IR2 + IR3

                            =  I (R1 + R2 + R3)

So RTOTAL           =  R1 + R2 + R3

 


Related Discussions:- Resistors in dc circuits

Determine the velocity of sound in sea water, An undersea explosion occurs...

An undersea explosion occurs. If the sea water has density 1.03 x 10 3 kg/m3 and Bulk Modulus of 2.41x10 9 Nm -2 ; a)  Determine the velocity of sound in sea water b)  If

Explain simple pendulum, Explain Simple Pendulum Simple Pendulum : The...

Explain Simple Pendulum Simple Pendulum : The A point mass suspended by a weight less and inextensible string to a friction less support is known as a Simple pendulum.

Effective mass, why effective mass are tensor quantities

why effective mass are tensor quantities

Planck radiation law, Planck radiation law A law that defined blackbody...

Planck radiation law A law that defined blackbody radiation better than its predecessor, therefore resolving the ultraviolet catastrophe. It is depend on the supposition that e

At what rate would you lose energy, you were to walk briefly in space witho...

you were to walk briefly in space without a spacesuit while far from the Sun (as an astronaut does in the movie  2001 ), you would feel the cold of space --while you radiated energ

What wavelength does the observer find in each case, A commuter train blows...

A commuter train blows its horn as it passes a passenger platform at a constant speed of 40.0m/s. The train horn sounds at a frequency of 305 Hz when the train is at rest. (a) W

Find magnitude of sum of two force, Two forces have magnitudes of 11 newton...

Two forces have magnitudes of 11 newtons and 5 newtons. The magnitude of their sum could NOT be equal to which of the following values? a) 16 newtons b) 5 newtons b)

Explain scalars and vectors, Explain Scalars and Vectors This is one of...

Explain Scalars and Vectors This is one of the harder ideas to get used to when you start learning physics. The trick is to see that there is one basic difference between a sca

Photomultiplier tube(ptm), Photomultiplier tube(PTM) it can detect a we...

Photomultiplier tube(PTM) it can detect a weak flash of light and estimate the amount of light .The principle of operation (fig(4)) a light photon released electron at the phot

Conservation of angular momentum, A figure skater who while spinning in pla...

A figure skater who while spinning in place drag her arms in to increase her rotational speed is most closely exhibiting which of the following Answer:- a) Conservation of

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