What is the ratio of powers delivered by 20 V dc and 20 V peak ac to the same load resistance?

Explanation

To find the ratio of powers delivered by 20 V DC and 20 V peak AC to the same load resistance, we can follow these steps:

### Step 1: Understand the Power Formulas
For DC (Direct Current), the power delivered to a load resistance \( R \) is given by:
\[ P_{DC} = \frac{V^2}{R} \]
For AC (Alternating Current), the power delivered is given by:
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