Metal detector: start an ac current running through the first loop by using the power amplifier to generate a sinusoidal voltage across the terminals of the loop. use around 2.0v at 2.0hz. place a second loop (unconnected in any visible way) a few centimeters away, but coaxial with the first loop. measure the peak voltage on the second loop fthe one wlo power hookup). q6: what do you see? crazy, huh! now u place the metal rod between the loops. q7: what happens to the voltage on the second p, loop? q8: do you get the same effect with a non-metallic object?