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3 years ago

6

Which description correctly summarizes how an electric motor causes an axle to turn?

1 answer:

Tasya [4]3 years ago

3 0

Answer:

The poles of the magnetic field generated around the armature are attracted to the opposite poles of the permanent magnet. As the opposite poles align, the commutator reverses the current direction so like poles are aligned and the armature continues to spin.

Explanation:

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A positively charged particle initially at rest on the ground accelerates upward to 160 m/s in 2.10 s. The particle has a charge

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The magnitude of the electric field is $8.6\times10^{2}\ N/C$

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Given that,

Time t = 2.10 s

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$a=\dfrac{v-u}{t}$

Put the value into the formula

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Using formula of electric field

$E=\dfrac{F}{q}$

$E=\dfrac{ma}{q}$

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Put the value into the formula

$E=\dfrac{76.19+9.8}{0.100}$

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Hence, The magnitude of the electric field is $8.6\times10^{2}\ N/C$

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