A typical lawnmower has an electromagnetic device called a magneto that produces a brief pulse of very high voltage electric charge. This charge runs through a short wire to the spark plug, where it jumps across a gap to produce the spark that ignites the gasoline. Unfortunately, the lawnmower interferes with the reception on your portable radio because
A)	when the charge accelerates during each ignition pulse, it emits radio waves.
B)	the magnetic field from the magneto attracts charge out of your radio's antenna so that it becomes electrically neutral.
C)	the alternating current used in the lawnmower's ignition system is incompatible with your portable radio, which requires direct current for its operation.
D)	the presence of electric charge in the magneto prevents current from flowing up and down your portable radio's antenna.
Answer:A
A typical lawnmower has an electromagnetic device called a magneto that produces a brief pulse of very high voltage electric charge. This charge runs through a short wire to the spark plug, where it jumps across a gap to produce the spark that ignites the gasoline. Unfortunately, the lawnmower interferes with the reception on your portable radio because
A)	when the charge accelerates during each ignition pulse, it emits radio waves. B)	the magnetic field from the magneto attracts charge out of your radio's antenna so that it becomes electrically neutral. C)	the alternating current used in the lawnmower's ignition system is incompatible with your portable radio, which requires direct current for its operation. D)	the presence of electric charge in the magneto prevents current from flowing up and down your portable radio's antenna.