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Vlad [161]
3 years ago
8

If a spear is jabbeb exactly at that place where the fish appears in water, the fish is not killed

Physics
1 answer:
Korvikt [17]3 years ago
7 0

You have learned your lesson well, Suhay. Your statement is correct.

The light rays from the fish BEND when they flow out of the water into the air. But our primitive brain still believes that the light rays flow STRAIGHT from the fish. The result is that the fish does not APPEAR to be at that place where it really is.

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A circular coil has a 18.0 cm radius and consists of 25.0 closely wound turns of wire. An externally produced magnetic field of
djverab [1.8K]

Answer:

The magnetic flux links to its turns = 7.6 \times10^{-3} Wb.

Explanation:

Given :

Radius of circular coil = 18 \times 10^{-2} m

Number of turns = 25

Magnetic field = 3 \times10^{-3} T

Magnetic flux (Φ) is a measure of the magnetic field lines passes through a given area. The unit of magnetic flux is weber (Wb).

We know that,

⇒    Φ = BA

Where B = ext. magnetic field, A = area of loop or coil.

But here given in question, we have turns of wire so our above eq. modified as follows.

⇒   Φ = NBA

Where N = no. of turns.

∴    Φ = 25 \times 3 \times 10^{-3}  \pi (18 \times10^{-2} )^{2}

     Φ = 7.6 \times 10^{-3} Wb

Thus, the magnetic flux links to its turns = 7.6 \times 10^{-3} Wb

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