🔍
Request Answer
Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why? 
0 like 0 dislike

Please log in or register to answer this question.

1 Answer

Since two bulbs are in series they will get equal amount of electrical current but as the supply voltage is constant across the bulb (P=V^2/R).So the resistance of 40W bulb is greater and voltage across 40W is more (V=IR) so 40W bulb will glow brighter.
0 like 0 dislike
Next Question ⇨⇦ Previous Question

Related questions

There are a Transformer and an induction machine. Those two have the same supply. For which device the load current will be maximum? And why? 
Last Answer : The motor has max load current compare to that of transformer because the motor consumes real power and the transformer is only producing the working flux and it’s not consuming. Hence the load current in the transformer is because of core loss so it is minimum....

Show More
0 like 0 dislike
1 answer

Random Images

A series has R=5Ω , L=0.15mH ,and C=100μF and is supplied with 230V,50Hz single phase. Find impedance, current, power, power factor of the circuit.
Last Answer : Solution: Impedance: Z Inductive Reactance, XL. ...

Show More
0 like 0 dislike
1 answer

Random Images
0 like 0 dislike
1 answer

Random Images

What does a string of resistors in a series will do?
Last Answer : When a string of resistors in a sequence will split the source voltage into the amount to their values....

Show More
0 like 0 dislike
1 answer

Random Images

Random Images
...