The number of significant figures in `11.118xx10^(-6)` V is

Options

A. 3
B. 4
C. 5
D. 6

Answer

To determine the number of significant figures in the number \( 11.118 \times 10^{-6} \) V, we can follow these steps:

### Step 1: Identify the significant figures
The significant figures in a number are the digits that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and any trailing zeros in the decimal portion.

### Step 2: Analyze the number
In the given number \( 11.118 \):
- The digits are: 1, 1, 1, 1, and 8.
- All of these digits are non-zero.

### Step 3: Count the significant figures
Since all the digits in \( 11.118 \) are non-zero, we count them:
- There are 5 significant figures in total.

### Step 4: Consider the scientific notation
The scientific notation \( \times 10^{-6} \) does not affect the count of significant figures. The exponent part (in this case, \(-6\)) is not counted as part of the significant figures.

### Conclusion
Thus, the number of significant figures in \( 11.118 \times 10^{-6} \) V is **5**.