Author Question: The principle or law that says an induced emf in a circuit loop produces a current whose magnetic ... (Read 118 times)

jc611 · **on:** Jul 28, 2018

The principle or law that says an induced emf in a circuit loop produces a current whose magnetic field opposes further change of magnetic flux is credited to:
a. Ampere.
c. Lenz.
b. Volta. d. Faraday.

Question 2

A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 4.0 cm. If a timer is started when its displacement is a maximum (hence x = 4 cm when t = 0), what is the speed of the mass when t = 5 s?
a. zero
c. 0.016 m/s
b. 0.0065 m/s
d. 0.024 m/s