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EJERCICIOS DE ELECTRICIDAD
ELEMENTOS ELECTRICOS
1. Los cables que normalmente utilizamos están hechos con cobre porque:
a) El cobre tiene una resistencia eléctrica baja.
b) El cobre es un metal
c) El cobre tiene una resistencia alta
2. ¿Cuál de estos elementos es un receptor?
a) Una pila
b. Un pulsador
c. Un motor
3. Al atravesar una bombilla, la energía eléctrica se transforma en:
a) Luz y calor.
b. Movimiento
c. Sonido
4. Nombra los distintos elementos que intervienen en el circuito.
5. Calcula lo que cuesta la energía consumida por los
siguientes componentes si el precio de la electricidad es 8,5070
Cents/kwh:
Cantidad
Elemento
Características
Tiempo funcionando
Jose Mendoza
EJERCICIOS DE ELECTRICIDAD
ELEMENTOS ELÉCTRICOS
1
15
Frigorífico
Alógenos
200 W
220 V, 0,4 A
1
Horno
2000 £2, 1,2 A
18 h
240 min
5400 segundos

Sagot :

GinnyAnsweridn

Final answer:

Copper wire's low electrical resistivity enables efficient electricity flow, while resistors play a vital role in adding resistance to circuits.


Explanation:

Copper wire is commonly used in electrical wiring because of its low electrical resistivity, allowing for efficient flow of electricity. Resistors are components that add resistance to a circuit, such as the filament in a light bulb or a toaster element. Different materials offer varying amounts of resistance based on factors like material type, length, thickness, and temperature.


Learn more about Electrical resistance and conductors here:

https://brainly.com/question/43879426


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