An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?
Answer (2)
Approximately 2.81 × 1 0 21 electrons flow through the electric device delivering a current of 15.0 A for 30 seconds. This was calculated using the relationship between current, charge, and the charge of a single electron. The total charge that flows is 450 C , leading to the number of electrons calculated.
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The component of a solution which is present comparatively in large quantity is: B) Solvent
In a solution, the solvent is the component that is present in the greatest amount and serves as the medium in which the solute is dissolved. For example, in a sugar-water solution, water is the solvent because it is present in a larger quantity compared to the sugar.
It provides support to branches, leaves and fruits etc.: A) Stem
The stem is a crucial part of the plant structure. It holds up the branches, supports the leaves to receive sunlight, and bears the fruits and flowers. Additionally, it acts as a conduit, transporting nutrients and water from the roots to other parts of the plant.
Which layer of the root consists of barrel-shaped cells?: C) Endodermis
The endodermis is the innermost layer of the cortex in roots and is characterized by its distinctive barrel-shaped, closely packed cells. This layer plays a vital role in regulating the movement of water and nutrients from the soil into the plant.
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