Author Question: A metal sphere is insulated electrically and is given a charge. If 50 electrons are added to the ... (Read 70 times)

daltonest1984 · **on:** Jul 29, 2018

A metal sphere is insulated electrically and is given a charge. If 50 electrons are added to the sphere in giving a charge, how many Coulombs are added to the sphere?

A) -8.0 10-18 C
B) -8.0 10-20 C
C) -80 C
D) -50 C

Question 2

A uniform magnetic field is applied perpendicular to the plane of a 60-turn circular coil with a radius of 6.0 cm and a resistance of 0.60 .

If the magnetic field increases uniformly from 0.20 T to 1.8 T in 0.20 s, what is the magnitude of the emf induced in the coil?
A) 7.2 V
B) 5.4 V
C) 9.2 V
D) 12 V
E) 16 V