If the brightest voltage of the lamp is 220 V and the working current is 0.18 a, what is the resistance of the filament when the voltage is 110 V If the title resistance or something is still unclear A is equal to 1222 B is equal to 611 C is greater than 1222 D is less than 1222

D. Low light power leads to low filament temperature and low filament resistance

Fluorescent lamp, electric fan and electric soldering iron are all 220 V and 60 W. if they are connected to the home circuit at the same time, who can convert more internal energy in the same time

Fluorescent lamp: light energy and heat energy
Electric fan: kinetic energy and heat energy
Electric iron: heat energy
So it's an electric iron