An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
In the context of HTML and web development, the Class Name locator refers to an attribute that is used to uniquely identify elements based on their class attribute value. This is particularly useful in web development, especially when working with CSS for styling elements or JavaScript for manipulating elements.
Attribute Explained : The class attribute in HTML is used to define one or more class names for an element. These class names can be used for styling purposes with CSS or for interaction with JavaScript. It allows a single piece of code to apply to multiple elements that share the same class.
Choosing the Correct Option : Given the options:
A) class
B) name
C) id
D) tag name
The correct option that a Class Name locator uses is A) class . This is because the locator specifically targets the class attribute of an HTML element to find and interact with the element.
Use in Web Development : Using class name locators allows developers to work more efficiently by applying styles or scripts to elements with a common feature or purpose. It simplifies coding and enhances the maintainability and readability of the code.
In summary, the Class Name locator utilizes the class attribute to locate elements within HTML documents. This method is especially valuable in scenarios where styling consistency and interactive functionality are required for multiple elements.
When a device delivers a current of 15.0 A for 30 seconds, about 450 coulombs of charge flows through it. This amount of charge equals approximately 2.81 x 10^21 electrons. Thus, roughly 2.81 quintillion electrons pass through the device.
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