One Joule is equal to A. 105 ergs B. 103 ergs C. 107 ergs D. 1011 ergs

The correct answer is: 1 Joule is equal to 107 ergs.

An erg is a unit of energy in the CGS system of units. It is defined as the work done by a force of one dyne acting through a distance of one centimeter. One joule is equal to 107 ergs.

Option A is incorrect because 105 ergs is equal to 100,000 ergs. Option B is incorrect because 103 ergs is equal to 1,000 ergs. Option C is incorrect because 107 ergs is equal to 10,000,000 ergs. Option D is incorrect because 1011 ergs is equal to 1,000,000,000,000 ergs.