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Novosadov [1.4K]

2 years ago

5

NEED HELP ASAP, ILL GIVE YOU BRAINLIEST IF CORRECT (30POINTS)

1 answer:

Vera_Pavlovna [14]2 years ago

5 0

Answer:

the bar is the top and bottem. the nucleas in the middle and the Spiral arm is the last space

Explanation:

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An electron moving with a velocity v⃗ = 5.0 × 107 m/s i^ enters a region of space where perpendicular electric and a magnetic fi

stiv31 [10]

Answer:

Magnetic field, $B=2\times 10^{-4}\ T$

Explanation:

Given that,

Velocity of electron, $v=5\times 10^7\ m/s$

It enters a region of space where perpendicular electric and a magnetic fields are present.

Magnitude of electric field, $E=10^4\ V/m$

We need to find the magnetic field will allow the electron to go through the region without being deflected.

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Electric force on the electron, F = q E........(2)

From equation (1) and (2) we get:

$qvB\ sin\theta=qE$

$B=\dfrac{E}{v}$

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B = 0.0002 T

or

$B=2\times 10^{-4}\ T$

Hence, this is the required solution.

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