A. infrared frequencies
B. d.c. and low frequency
C. a.c. and high frequency
D. frequencies having no effect
E. none of the above
Correct Answer: d.c. and low frequency ✔
Last Updated: December 22, 2018
A. infrared frequencies
B. d.c. and low frequency
C. a.c. and high frequency
D. frequencies having no effect
E. none of the above
Correct Answer: d.c. and low frequency ✔
Last Updated: December 22, 2018