Can someone explain how this works? I though Watts (W) = Voltage * Current.

240 * 0.08 = 19.2, so how is this a 8W bulb?

http://i.imgur.com/OFUFQ.jpg

Question

Can someone explain how this works? I though Watts (W) = Voltage * Current.

240 * 0.08 = 19.2, so how is this a 8W bulb?

http://i.imgur.com/OFUFQ.jpg

anonymous · Answer

Amazing question!!!!!!!! The relation is correct, but even I am stuck in this question. Hope someone helps me.

sasogeek · Answer

Watts is the unit for power, power is a rate... did u notice the 50Hz written on the bulb? that means something... it's not there for fun ;)

.sam. · Answer

$$P=\frac{W}{t}$$
$$P=\frac{qV}{t}$$
------------------
$$I=\frac{q}{t}$$
$$P=IV$$

anonymous · Answer

Still, I am not clear.

.sam. · Answer

The voltage is from AC

.sam. · Answer

$$P=\frac{1}{2}I _{0}^{2}R$$