Answer / rajeshsan

Yes there is difference.

1. While connecting the bulb in series the voltage drop between the circuit will be V1+V2, considering V as supply. It is like connecting two resistor in series.

2. But while connecting the bulb in parallel, the voltage across the each bulb are equal. say V1=V2=V.

Answer / iamdon

Consider this case with two identical bulbs.The resistance
(calculated by voltage squared diveded by power rating of
bulb) of ecah bulb will be same.

Lets the resistance of each bulb is R and the supply
voltage is V.

Power absorbed in series by one bulb=(V/2)*(V/2)/R=V*V/4R
Power absorbed in parallel by one bulb=(V*V)/R=V*V/R

Clearly, the bulb in parallel glow more.Thats why household
wiring are done in parallel mode.

Author:arbelectbit@yahoo.com

Answer / s.sam jeba singh

In series connection total resistance for two bulbs R=
R1+R2
In parallel connection total resistance for two bulbs R=
R1*R2/R1+R2

what is the use of interposed & reverse voltage transformer

2 Answers   Anjani Steels,

---

what is the difference between STAR and DELTA connection and application wise how it can be utilizedd

0 Answers  

---

If we give the 440 V supply at secondary winding of the transformer then what will affect at primary winding???????

6 Answers  

---

-What is leakage current . how much leakage current is allowed.

3 Answers  

---

Hai, I am from EEE branch.On feb 17 iam going to write an Exam for hindustan petrolium corporation Ltd.So plz send me the written exam pattern/Q's/interview questions.please mail to yuva_polisetti@yahoo.co.in

0 Answers  

---

---

why transformers not work at d.c.-

3 Answers  

---

i need 24v dc from 230v ac supply how we can getit ? what are the devices &its rating requied for that ? plzz i need answer urgently .thank u

3 Answers  

---

Why Lightning arrester used? Can we use piece of iron as a core material of transformer, if No, why? In CRGOSS material what is meaning of cold rolled grain oriented? Why Impegrenation of Transformer is done? Properties of Insulator? what is phase angle? Testing of transformers (Routine & Monthly)?

6 Answers   NTPC,

---

what is meant by re-rolling motor? how it differs from standard motor?

0 Answers  

---

defult setting in p220 micom motor proction relay for 11kv,640kw,f.l.a.-40a,1440rpm ht motor?

0 Answers  

---

When the relative speed between the magnetic fields of stator and rotor does is zero under steady state operation?

0 Answers   HPCL,

---

what is meaning volt-hz ration,where is necessry tomaintain and why. specialy during increase the power of generator.

3 Answers  

---