Two bulbs of 100 W and 40 W are connected in series. The current through the 100 W bulb is 1 A. The current through the 40 W bulb will be:

(a) 0.4 A

(b) 0.6 A

(c) 0.8 A

(d) 1 A



In a series connection , the current flowing through each component remains the same.

The current flowing through the 100W bulb is 1A.

Since both the 100W bulb and the 40W bulb are in series,

The current flowing through the 40W bulb is also 1A.

So, the correct answer is (d).

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CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo