60 watt bulb and 1500watt iron which device has more resistance & why

Categories >> Engineering >> Electrical Engineering
Suggest New Category

60 watt bulb and 1500watt iron which device has more
resistance & why

Question Posted / gopal_manda

5 Answers
8416 Views
RMSI, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

60 watt bulb and 1500watt iron which device has more resistance & why..

Answer / desingurajan ramco cements...

This is 100% correct answer.

60W Lamp is having more Resistance......
1500W Lamp is having Low Resistance......
B'coz 1500W lamp having low resistance mean, High Current
Flow through the Lamp(Tungsten Filament)....

if V=220Volts,

60w Lamp:
Power=VxI
I= Power/V
I= 60/220
I= 0.2727Amps

1500w Lamp:
Power=VxI
I= Power/V
I= 1500/220
I= 6.818Amps

So 1500w Lamp getting high Current

Now we find the Resistance of Each Lamp,

As Per Ohms Law, V = IR

60w Lamp
V = IR
R = V/I
R = 220/0.2727
R = 806.6667Ohms
Resistance of the 60w Lamp is 806.667Ohms

1500w Lamp
V = IR
R = V/I
R = 220/6.818
R = 32.2675Ohms
Resistance of the 1500w Lamp is 32.2675Ohms

Resistance of the 60w Lamp is 806.667Ohms
Resistance of the 1500w Lamp is 32.2675Ohms

Therefore 60w Lamp Get More Resistance than 1500w Lamp

Is This Answer Correct ?

41 Yes

2 No

60 watt bulb and 1500watt iron which device has more resistance & why..

Answer / desingurajan ramco cements...

Hello Frnds,

One more information,

This applicable for all Resistive Device.

Is This Answer Correct ?

11 Yes

0 No

60 watt bulb and 1500watt iron which device has more resistance & why..

Answer / deepak pandey

yes 60 watt lamp has more resistance than 1500 watt lamp
bcoz we know that
p = v.v/r
means if r is large then power will be less.
thats why in 60 watt bulb will have high resistance...

Is This Answer Correct ?

4 Yes

2 No

60 watt bulb and 1500watt iron which device has more resistance & why..

Answer / gopal

in ac case there is impidence not only resistance.think
about it.

Is This Answer Correct ?

3 Yes

4 No

60 watt bulb and 1500watt iron which device has more resistance & why..

Answer / shiva

power=v*I*cos(phi) in case of ac but in case of dc p=v*I. so the above answer is valid in the case of dc

Is This Answer Correct ?

0 Yes

1 No

Post New Answer

More Electrical Engineering Interview Questions

Dear, How much ph is maintained of water electrolite used in lrs for slipring induction motor ?

1 Answers

what is trip circuit supervision relay? How does it work in switchgear?

6 Answers Radha Regent Hotels,

how oil in the MOCB was reduced compared with OCB? what are the features of the MOCB?

0 Answers Asahi, BARC, K-Electric,

what is the difference between scaler and vector control in drive and where it is to be used ?

1 Answers Essar, TCS,

In diesel generator how AVR get voltage to excitation. And basic diagram DG EXCITATION CIRCUIT.

0 Answers Hyatt,

I want to know what must the CT ratio be on a load of 300A is a 3PH nutral to earh installation?

4 Answers

why knee point voltage should be high in Ct for differential protection

1 Answers NTPC,

Which type of gas used in cylinder (VCB)?????

15 Answers ICSA,

Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?

0 Answers

why don't we use the generator as a motor? and what will happen?

0 Answers

why do we generate sinusoidal ac?can we generate some other waveforms by alternators?

11 Answers Siemens,

What is difference between AC and DC resistance

9 Answers Eaton,

For more Electrical Engineering Interview Questions Click Here