Which formula can be used to convert Celsius to Kelvin?

• A. K = C + 273
• B. K = C - 273
• C. K = C x 273
• D. K = C / 273

Answer: (A)

To convert a temperature from Celsius to Kelvin, the relationship between these two temperature scales is represented by the formula K = C + 273. This conversion is based on the fact that 0 degrees Celsius is equivalent to 273.15 Kelvin, establishing the reference point for the conversion.

In this formula, K represents the temperature in Kelvin, while C represents the temperature in degrees Celsius. Since Kelvin is an absolute temperature scale, it is essential to add 273.15 (often rounded to 273 for simplicity in basic calculations) to the Celsius temperature to obtain the correct value in Kelvin.

The other options provided do not reflect the correct mathematical relationship for converting Celsius to Kelvin. They involve subtraction or multiplication, which do not correspond to the conversion needed for accurate temperature scaling.