2. Un cable de cobre de 2,50 m de largo tiene 1,50 V en sus...

2. Un cable de cobre de 2,50 m de largo tiene 1,50 V en sus extremos. a) Encuentra el campo eléctrico dentro del cable. (valor 4 aciertos) b) ¿Cuál es la aceleración de un electrón en este campo? (valor 4 hits) c) Una velocidad de deriva típica para los electrones de conducción es 1 mm/s, ¿qué distancia recorrería un electrón antes de alcanzar esta velocidad? (valor 4 hits)

A. Two point charges, +8x10^-9 C and -2x10^-9 C, are separated by 4 m. The electric field magnitude midway between them is about: B. A current of 1.2 A is passed through a lamp for 0.5 minutes using a 32-V power supply. The energy dissipated by the lamp during the 0.5 minutes is: C. You have five homogeneous wires made of the same material. Each wire has a diameter of 5 mm and a length of 1.2 m. When the five wires are connected in series, their combination has an equivalent resistance of Req. You want to obtain this same equivalent resistance with a single wire made of the same material, but whose diameter is 1 mm. About how long should this single wire be? D. If you wish to increase the power produced in a heating device four times, you could: E. Three coulombs of charge that pass through a 9-volt battery are given an energy of about: A 12-W lamp and a 6-W lamp are each plugged into identical electric outlets. The electrical current through the 12-W lamp is about:

Sri K.

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