University of Pennsylvania
PHYS 151
Physics 141/151 Worksheet #16: Faraday’s Law
ℰ = # !""#$ %⃗ ⋅ ()⃗ = - ((, Φ$ Φ$ = . / %⃗ ∙ (1 ⃗ 2 ⃗ = 34 %⃗ × / %⃗ 6 ⃗ = 7 ⃗ × / %⃗ /%"!&'"() = 7*83
1. A circular conducting ring of radius ! = 10.0 cm is placed in a uniform magnetic
field that is directed into the page. What is the direction of the induced current in
each of the following cases?
a) Magnetic field remains constant
b) Magnetic field increases
c) Magnetic field decreases
d) If the magnetic field as a function of time is given by )(+) = 1.00 T + (0.250 T/s)+ and the resistance of the loop is
3 = 2.00 Ω, what is the induced current in the loop?