Answer:
c. selenium
Explanation:
sulfur and selenium are in the same group
Answer:
<em>To reverse the direction of an electric current, we simply reverse the voltage either automatically with the help of some switching circuitry or manually by changing the voltage source terminals connection. </em>
Explanation:
For electric current to flow, there must be a potential difference, usually referred to as the voltage. The electric current flow is analogous to the flow of water under the action of a pump, through a series of pipe connections. The voltage is similar to the driving action of the pump, and current flows the same way water flows. The resistance due to drag on the pipe wall is equivalent to electric resistance. For current to flow in the reverse direction, the voltage or rather, the potential difference is changed, causing the current to flow in the opposite direction. This can be done by switching the terminals of the voltage source, or by automatic means. The automatic switching can be done with a transistor based circuitry.
Answer:
pues libros y enciclopedia
Does it have to be that exact word. cause it is just another term for psuedopodium
Answer:
Yes
Explanation:
A chemical reaction maintains a constant voltage between the negative and positive terminals of a battery. Electrons are transferred from anode to cathode. As the reaction progresses, the voltage decreases continually until the reaction attains equilibrium and the voltage between the battery terminals becomes 'zero'. At this point, the battery is said to be dead because there will be no more flow of current between the terminals of the battery.