Question

What is electric current? What is its SI unit? Is current a scalar or a vector quantity? What are the conventions regarding the flow of current? Name the instrument that is used for measuring the current flowing through a circuit.​

Answer 1

Answer:

Read the following verses and answer the questions that follow.

(3x1=3M)

“He stalks in his vivid stripes, The few steps of his cage,

On pads of velvet quiet, In his quiet rage.”

a. Name the poet who has penned this poem.

b. What do the vivid stripes on his body tell us about the tiger?

c. How does the word ‘quiet’ differ in meaning in verse 3 (velvet quiet) and verse 4 (quiet rage)?

Answer 2

Answer:

1.Electric current is basically the flow or charge of the electric charge in motion in a conductor. It is said to exist when there is a net flow of charge through the region

2.The SI unit of electric current is the ampere, or amp, which is the flow of electric charge across a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit Electric current is measured using a device called an ammeter

3.Current is a vector because it has a magnitude and a direction. But the thing is a vector always obeys the law of addition of vectors. Since current doesn't obey it and it follows algebraic addition, currents are scalar.

4.The direction of current by convention is the direction of flow of positive charges. The direction of the current is opposite to flow of electrons. The direction of the current is from high potential to low potential.

5.ammeter

An ammeter is a measuring device used to measure the electric current in a circuit.

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