An electric bulb is designed to operate at `12 volts DC`. If this bulb is connected to an AC source and gives normal brightness, what would be the peak voltage of the source?

Explanation

To find the peak voltage of the AC source that allows a bulb designed for 12 volts DC to operate at normal brightness, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Relationship Between AC and DC**:
- The bulb operates at 12 volts DC, which means it has a certain power rating at this voltage. When connected to an AC source, it will have a root mean square (RMS) voltage that can be compared to the DC voltage.

2. **RMS Voltage of AC**:
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