Question

Express the power of a 100 watt bulb in CGS unit.

Answer 1

Step 1: Given

In S.I. unit 100 watt = 100 joule/sec

Step 2: Formula used

In C.G.S unit $1joule={10}^{7}erg$

Step 3: Finding the power in CGS

100 watt = 100 joule/sec = $\frac{100\times {10}^7}{1}={10}^9$ erg/sec

Hence in C.G.S unit it is $={10}^{9}erg/sec\left(cgsunit\right)$.