Author Question: If a lamp has resistance of 120 W when it operates at 200 W, what is the applied voltage? a. 120 V ... (Read 13 times)

rmenurse · **on:** Jul 28, 2018

If a lamp has resistance of 120 W when it operates at 200 W, what is the applied voltage?
a. 120 V
c. 110 V
b. 220 V
d. 155 V

Question 2

A uniform solid sphere rolls down an incline of height 3 m after starting from rest. In order to calculate its speed at the bottom of the incline, one needs to know:
a. the mass of the sphere.
c. the mass and the radius of the sphere.
b. the radius of the sphere.
d. no more than is given in the problem.