
COMUNICACIONES (4º)
Authored by Susana Díaz
Science, Education
10th Grade
Used 20+ times

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52 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La figura de la imagen es:
Una onda electromagnética
Una onda senoidal
Una onda dual
Todas son correctas
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
En una onda electromagnética, las componentes eléctrica y magnética están desfasadas una respecto de la otra:
45º
120º
Ninguna es correcta
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Las ondas electromagnéticas se desplazan a 300.000 Km/s:
En cualquier medio
En la Tierra
En el vacío
Ninguna es correcta
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Cuando una onda electromagnética se desplaza por un medio diferente al vacío, su velocidad de propagación será:
Mayor que en el vacío
Menor que en el vacío
Igual, el medio no afecta
Ligeramente inferior que en el vacío
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El medio definirá la velocidad de propagación de la onda electromagnética a partir de sus valores de:
Permitividad eléctrica
Permitividad magnética y permeabilidad eléctrica
Permeabilidad magnética y permitividad eléctrica
Permisividad magnética
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Entre los parámetros que definen una onda:
Frecuencia
Período
Amplitud
Todas son correctas
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
El nº de veces que una onda se repite en un determinado tiempo se llama:
Amplitud
Frecuencia
Período
Longitud de onda
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