Find the EMF generated by a guitar string in the pickup coils

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
2 replies · 2K views
b1llso
Messages
1
Reaction score
0
Homework Statement
A string of acoustic guitar vibrates. The component of the magnetic field perpendicular to the area of a proximal amplifier coil is given by
B = 50.0 mT + (3, 20mT) sin (2π523t).
The circular amplifier coil has 30 turns and a radius of 2.70 mm. Find the induced EMF in the coil as a function of time.
Relevant Equations
B = 50,0 mT + (3, 20mT) sin(2π523t)
I tried using the general EMF equation but don't know how to apply it with the equation from the problem
 
Physics news on Phys.org
Hi b1llso. Welcome to PF!

I am not sure what equation you are using. What is the law that you are applying?

Hint: You are given N and A for the coil and you are given the magnetic field B through the coil as a function of time t. What is dB/dt?

AM
 
The answer they don't want: Zero

It's an Acoustic guitar and it uses Silk strings
...or Nylon ones.:wink: