There is a frill of 20 bulbe (connected in series ) in a room. One bulb is fused. The remaining 19 bulbs are again joined in series and connected to the same supply. Will the light increase or decrease in the room ?

Explanation

To solve the problem, we need to analyze the situation step by step.

### Step 1: Understand the Initial Setup
We have a total of 20 bulbs connected in series. In a series circuit, the total resistance is the sum of the individual resistances of the bulbs. Let's denote the resistance of each bulb as \( R \). Therefore, the total resistance \( R_{\text{total}} \) when all 20 bulbs are functioning is:
\[ R_{\text{total}} = R_1 + R_2 + \ldots + R_{20} = 20R \]

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