Answer / baljinder singh

According to I=V/R. The resistance of 40W bulb is high than
100W bulb , but current flowing in it low rather than 100W
bulb. The Power= I^2R. The current is multiply with own
first ,because it has square ,and then it multiply with
voltage. So when current is decrease the power is consume by
bulb is less..

Answer / joydeep kr. chakraborty

The Joule's formula P=I^2R holds good only if I through
them is Constant. But, when connected accross same voltage,
the current through a 40W bulb is less than a 100W bulb.
Thus, I^2R for 40W bulb will be much much less than that of
a 100W bulb.
If we connect them in SERIES and apply voltage to the
combination, the current passing through them will be same,
and in that case, the 40W bulb will definitely CONSUME MORE
POWER THAN 100W BULB.

Answer / osho katyal

In domestic lines,we got parallel connections. So formula
P=V2/R is applicable .As such P and R are inversely related.
So power less more resistance less cureent.

Answer / kiran

even if u take the resistance of 40 watt bulb higher than
100 watt bulb,as the current varies square(I^2) the power
consumption,so power consumed by 100 watt is higher than
former........

Answer / manda.gopal1

I think that 40 watt bulb has more impidence then 100 watt
bulb. 40 watt bulb offer higher impedence then 100 watt bulb

if the transformer at full load have a iron loss =900w and copper loss = 1600w . what percent of the load will the transformer has a maximum efficiency?

3 Answers  

---

How Can we calculate the rating of a cable?Show the formula?

2 Answers   Jindal,

---

State the difference between Surge Arrester and Lightning arrester,Both are same or not?

7 Answers  

---

hi frienda We have 750kva cater pillet dg set we are fasing one diffrent proublam in dg we are start dg set after one mint applying load around 450a load but dg was run 3 Or 4 mints after 3 mints dg was shuding down automatic how to face this proublam pls tel any budy

1 Answers  

---

what is transformer

63 Answers   ABB, Advance Power Controls, CERC, Electrical, Electrical Supervisor Competency Certificate, ETA, IBM, Jindal,

---

---

WHAT IS MEANT BY SYNCHRONISING IN GENSETS

5 Answers  

---

which is the most advanced form of SF6 BREAKER?Can we use other gases to quench the arc?

0 Answers   TATA,

---

what is the difference between ac drives and dc drives?

1 Answers  

---

What is the diffrence (Technical & Construction ) between CBCT & Normal CT?

0 Answers  

---

Assume a condition such that two motors of rating 6.6kv,415v are connected to blower,so tell me which motor draw large current give appropriate reason?

2 Answers   NTPC, Student,

---

what are pilot cells

0 Answers   KSEB,

---

why rotor current reading is taken & why not stator?

4 Answers  

---