Question

The bulbs in the electric circuit shown below fail to glow. Observe and identify the part responsible for this.


please solve this​

Answer 1

Explanation:

Problem on combination of two cells..

Positive terminal of one cell should be connected with negative terminal of other to make the bulb glow.

And in the figure both negative terminal conneced to each other . Hence bulb fails to glow.

In upper diagram i made the correct combination of cells..

Answer 2

Answer:

because of Two cells

4 is the correct