A steady dc current of 2.83A is flowing in a resistance wire. The rms value of this current is-

Options

A. 2.83 A
B. about 2A
C. about 4A
D. undefined for dc

Answer

To find the RMS (Root Mean Square) value of a steady DC current, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of RMS Value**:
The RMS value of a current is a measure of the effective value of an alternating current (AC), but for a direct current (DC), the RMS value is simply equal to the value of the current itself.

2. **Identify the Given Current**:
In this case, the steady DC current flowing in the resistance wire is given as 2.83 A.

3. **Apply the RMS Formula for DC**:
For a steady DC current, the RMS value (Irms) is calculated as:
\[ I_{rms} = I_{DC} \]
where \(I_{DC}\) is the direct current value.

4. **Substitute the Given Value**:
Since the DC current is 2.83 A:
\[ I_{rms} = 2.83 \, \text{A} \]

5. **Conclusion**:
Therefore, the RMS value of the current is 2.83 A.

### Final Answer:
The RMS value of the current is **2.83 A**.

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