A 50-turn circular coil (radius = 15 cm) with a total resistance of 4.0 ? is placed in a uniform magnetic field directed perpendicularly to the plane of the coil. The magnitude of this field varies with time according to B = A sin (?t), where A = 80 ?T and ? = 50? rad/s. What is the magnitude of the current induced in the coil at t = 20 ms?
A. 11 mA
B. 18 mA
C. 14 mA
D. 22 mA
E. zero
Answer: A
You might also like to view...
Consider again the objects you ranked by distance in Part A. Suppose each object emitted a burst of light right now. Rank the objects from left to right based on the amount of time it would take this light to reach Earth, from longest time to shortest time.
Compare how doubling the diameter of a mirror will affect both resolution and light grasp
What will be an ideal response?
When are eclipse seasons?
A) in the spring and fall B) in the summer and winter C) when the nodes of the Moon's orbit are nearly aligned with the Sun D) when Earth and the Sun are aligned with one another E) during an eclipse
In what way is Venus most similar to Earth?
A) Both planets are nearly the same size. B) Both planets have similar atmospheres. C) Both planets have similar surface geology. D) Both planets have warm days and cool nights.