which best contrasts electric doorbells and audio speakers? doorbells involve rapid changes in the direction…

which best contrasts electric doorbells and audio speakers? doorbells involve rapid changes in the direction of current, and speakers do not. speakers involve rapid changes in the direction of current, and doorbells do not. doorbells require closed circuits in order to work, and speakers do not. speakers require closed circuits in order to work, and doorbells do not.

which best contrasts electric doorbells and audio speakers? doorbells involve rapid changes in the direction of current, and speakers do not. speakers involve rapid changes in the direction of current, and doorbells do not. doorbells require closed circuits in order to work, and speakers do not. speakers require closed circuits in order to work, and doorbells do not.

Answer

Brief Explanations:

Los parlantes de audio usan corriente alterna (CA) donde la dirección de la corriente cambia rápidamente para vibrar el cono y producir sonido. Las campanas eléctricas suelen funcionar con corriente continua (CC) o CA simple, y no necesitan cambios rápidos de dirección de corriente para funcionar. Ambas, sin embargo, necesitan circuitos cerrados para funcionar.

Answer:

B. Speakers involve rapid changes in the direction of current, and doorbells do not.