Αποτελέσματα Αναζήτησης
learning objectives. Describe the relationship between the electrical current, voltage, and resistance in a circuit. To understand how to measure current and voltage in a circuit, you must also have a general understanding of how a circuit works and how its electrical measurements are related.
The rate at which the charges flow past a location—that is, the amount of charge per unit time—is known as the electrical current. When charges flow through a medium, the current depends on the voltage applied, the material through which the charges flow, and the state of the material.
In microbiology, a colony-forming unit (CFU, cfu or Cfu) is a unit which estimates the number of microbial cells (bacteria, fungi, viruses etc.) in a sample that are viable, able to multiply via binary fission under the controlled conditions.
A cell with internal resistance cannot be an ideal cell as its own resistance will limit the current, and also affect the current in the circuit in which it is connected. The diagram below shows how a real cell can be decomposed, in the context of a circuit.
The colony forming unit (CFU) is a measure of viable colonogenic cell numbers in CFU/mL. These are an indication of the number of cells that remain viable enough to proliferate and form small colonies. Isolated hMSCs were plated in a 6-well cell culture plate along with 2–3 mL of DMEM medium.
The rate at which the charges flow past a location—that is, the amount of charge per unit time—is known as the electrical current. When charges flow through a medium, the current depends on the voltage applied, the material through which the charges flow, and the state of the material.
Microscopic Electric Current. Since electric charge is quantized in discrete multiples of the electron charge, it is instructive to look at electric current as the movement of multiple microscopic charge carriers with a drift velocity in a conductor.
