? asked in 科學及數學其他 - 科學 · 1 decade ago

中二科學,聽日測...急!

1)影響導體電阻有邊三要素?

2)燈泡在什麼時候最易燒

3)伏打電堆

4)電鰻

5)歐姆定律

6)超導體

7)心電圖,測謊機

1 Answer

Rating
  • Anonymous
    1 decade ago
    Favorite Answer

    1)影響導體電阻有邊三要素?

    material of wire,the thickness of the wire and how long of the wire

    2)燈泡在什麼時候最易燒

    when the current of the bulb is reach the limitation of the bulb or when it get very very hot

    un-clear of question (3) and (4)

    5)歐姆定律

    Ohm's Law : V=IR

    where V is Voltage,I is Current and R is Resistance

    6超導體

    Semiconductor

    when the Semiconductor operate under 70 degrees Celcius,the reistance of the Semiconductor is Zero.

    un-clear of question(7)

Still have questions? Get your answers by asking now.