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3 years ago

14

Why was Alessandro Volta's battery important to the evolution of electromagnetics and on the present

1 answer:

Sonbull [250]3 years ago

3 0

Alessandro Volta's battery was a simple and reliable source of electric current, which allowed scientists to study electricity better than they could with previous sources, such as the Leyden jar, and allowed the development of new technology powered by electricity.

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79. An example of an electrical insulator is

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Answer:

B. Glass

Explanation:

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2 years ago

An object is located 25.0 cm from a convex mirror. The image distance is -50.0 cm. What is the magnification?

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Answer:

$\boxed{\sf Magnification \ (m) = 2}$

Given:

Object distance (u) = 25.0 cm

Image distance (v) = -50.0 cm

To Find:

Magnification (m)

Explanation:

$\boxed{\bold{\sf Magnification \: (m) = - \frac{Image \: distance \: (v)}{Object \: distance \: (u)}}}$

Substituting values of Image distance(v) & Object distance (u) in the equation:

$\sf \implies m = - \frac{( - 50)}{25}$

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$\sf \implies m = \frac{50}{25}$

$\sf \implies m = \frac{2 \times \cancel{25}}{ \cancel{25}}$

$\sf \implies m = 2$

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3 years ago