3 years ago

1. Which of the following is carried by the waves from one place to another?

Physics

1 answer:

Semenov [28]3 years ago

6 0

Answer:

B) Energy

Explanation:

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A 0.900-V potential difference is maintained across a 1.5m length of 2

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Answer:

I = 6.42 A

Explanation:

Given that,

Potential difference, V = 0.9 V

Length of the wire, l = 1.5 m

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We need to find the current in the wire. Let I is current. We can find it using Ohm's law as follows :

V = IR

Where R is the resistance of the wire

$I=\dfrac{V}{R}\\\\I=\dfrac{V}{\rho \dfrac{l}{A}}\\\\I=\dfrac{0.9}{5.6\times 10^{-8}\times \dfrac{1.5}{6\times 10^{-7}}}\\\\I=6.42\ A$

So, the current in the wire is 6.42 A.

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3 years ago