(ii) Out of the four bulbs 25W,50W, 100W, 150W which bulb has least
resistance?
a. 25W
b. 50W
c. 100W
d. 150W
JMS75:
r u from dps east?
I am from sonipat , haryana
oh im frm blr, anyways nice to meet u
i asked bcos i had the same q in my preboard and this q was asked at the same time
oh
Answers
Answered by
2
Answer:
25 W is has least resistance
Answered by
0
Given:
The four bulbs 25 W, 50 W, 100 W, 150 W.
To find:
Out of the four bulbs 25 W,50 W, 100 W, 150 W which bulb has least
resistance?
Solution:
From the given information, we have the data as follows.
The four bulbs 25 W, 50 W, 100 W, 150 W.
The formula that relates the relation between the power and the resistance is given as follows.
P = V²/R
P ∝ 1/R
The power is inversely proportional to the resistance.
From the given options, 150 W is the highest, so, it will have least resistance.
Therefore, the option (d) 150 W is correct.
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