Question

A 10-bit ADC has a range of \(0\text{–}5V\), the resolution of the ADC is approximately

• A. 10 mV
• B. 100 mV
• C. 0.5 V
• D. 1 V

Hint:

Resolution ≈ Range / \(2^n\)

Answer 1

The Correct Option is A

Concept: Resolution of ADC is the smallest change in input voltage that can be detected.

Step 1: Formula \[ \text{Resolution} = \frac{\text{Voltage range}}{2^n} \]

Step 2: Given values \[ n = 10,\quad \text{Range} = 5V \]

Step 3: Compute denominator \[ 2^{10} = 1024 \]

Step 4: Calculate resolution \[ \frac{5}{1024} \approx 0.00488V \]

Step 5: Convert units \[ 0.00488V \approx 4.88\,mV \approx 10\,mV \]

Conclusion: \[ \boxed{10\ \text{mV (approx)}} \]

Final Answer: \[ \boxed{(A)} \]