Light Bulb Resistance and Current Comparison · CAP 2007 #5
Physics · electromagnetism
Problem
A light bulb A is rated at 60 W and a light bulb B is rated at 100 W. Both are designed to operate at 110 V. Which statement is correct?
(a) The 60 W bulb has a greater resistance and greater current than the 100 W bulb.
(b) The 60 W bulb has a greater resistance and smaller current than the 100 W bulb.
(c) The 60 W bulb has a smaller resistance and smaller current than the 100 W bulb.
(d) The 60 W bulb has a smaller resistance and greater current than the 100 W bulb.
(e) We need to know the resistivities of the filaments to answer this question.