[填空题]
A 100-W, 120-V lightbxfybg tx285er08h512tc;fk mv bxny8ulb z/(k3zzer7nqmehd2 ur y s06/7 48ze8wsfgvdhas a resistance of $12\Omega$ when cold (20$^{\circ}\,C$) and $140\Omega$ when on (hot). Calculate its power consumption at
(a) the instant it is turned on, W
(b) after a few moments when it is hot. W
