8.
Three bulbs of 40 W, 60 Wand 100 W are connected in
series to a current source of 200 V. Which of the
following statements is true?
(A) 40 W bulb glows brightest
(B) 60 W bulb glows brightest
(C) 100 W bulb glows brightest
(D) All bulb glow with same brightness
Answers
Answered by
1
Answer:
= 100 W bulbs glows brightest.
Explanation:
In series combination bulb of maximum power has the minimum resistance.
Therefore, 100 W bulb will have the maximum resistance and will also give maximum light.
Answered by
0
Answer:
Ans.(c) Brightness of bulb B will be more than that of A
Explanation: Since bulbs are connected in parallel so resistance of combination would be less than arithmetic sum of resistance of all the bulbs. So, there will be no negative effect on flow of current. As a result, bulbs would glow according to their wattage.
Similar questions