Question

What is the power of a $100W$ bulb in CGS units?

• A. $10^6$ ergs ${}^{-1}$
• B. $10^{7}erg{s}^{-1}$
• C. $10^9$ ergs ${}^{-1}$
• D. $10^{11}$ ergs ${}^{-1}$

Answer 1

Answer: (C)

As, $100W=100J{s}^{-1}=10^{9}erg{s}^{-1}$