Students in ms. winters' class were interested in testing the antibacterial strength of hand soap versus hand sanitizer. the students planned to wash their hands using the sanitizer or soap and warm water for two minutes, then dry their hands with a paper towel. the standard of comparison would be rubbing their hands vigorously for 2 minutes in warm water, without any soap or sanitizer, and then drying with a paper towel. the sanitizer advertisement claimed to kill bacteria more effectively than any soap. after washing, hands would be swabbed and then the swab applied to a culture plate and incubated. finally, the bacterial cultures would be counted.
what would be an appropriate research question to guide this scientific investigation?
a) what method kills bacteria?
b) under what conditions does bacteria grow best?
c) is hand sanitizer more effective in killing bacteria than hand soap?
d) how does using hand sanitizer to kill bacteria compare to using just warm water?

Parallel Circuits

Explanation:

An electric circuit refers to a continuous and an interrupted pathway along which electric current can flow. A simple electrical circuit is made up of three components: the power source, two conducting wires (one at each end/terminal of the cell), and a small lamp powered by the cell. If any of the wires at the terminal is disconnected, the circuit stops working.

There are 2 types of electrical circuits, they are:

I. Series circuit

II. Parallel circuit

In a series circuit, the components are connected in such a way that the current that flows through every component is identical, and the voltage of the circuit is the sum of the voltages across every component. In a series circuit all components must function for the circuit to be complete and if any component stops functioning, the circuit stops functioning. Hence, the setup path of bulbs in the series circuit is not independent and complete

In a parallel circuits, the components are connected in such a way that all the bulbs have their own circuit. The current that flows through every circuit is dependent on the components in that circuit and so also the voltage. The result is that if any bulb burns out, all the other bulbs will continue to function. We therefore conclude that the setup path of bulbs in the series circuit is independent and complete

Hence, "In parallel circuits, each of the bulbs would be  set up in paths independent and complete."