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4 years ago

14

The theory of plate tectonics suggests that about 200 million years ago, all of Earth's land was confined to a single continent

called
A. Laurasia.
B. Eurasia.
C. Gondwanaland.
D. Pangaea

2 answers:

miss Akunina [59]4 years ago

8 0

The answer is D Pangaea

goblinko [34]4 years ago

8 0

The people at that time called their continent "Pangaea". We see it everywhere in their books, newspapers, mp3s and movies.

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timama [110]

<h3><u>Given :- </u></h3>

Length of the rectangular wire, L=0.3 m
Width of the rectangular wire, b=0.2m
Magnetic field strength, B=0.8 T
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$\underline{\underline{\large\bf{Solution:-}}}\\$

(I) Emf developed,E in the loop is given as:

$\begin{gathered}\\\implies\quad \sf E = BLv \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf E = 0.8 \times 0.3 \times 12 \\\end{gathered}$

$\begin{gathered}\\\implies\quad \sf E = 2.88 V \\\end{gathered}$

$\longrightarrow$ I = E/R

$\quad$ R = E/I

where

R = resistance
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I = Current

$\begin{gathered}\\\implies\quad \sf R = \frac{2.88}{3} \\\end{gathered}$

$\begin{gathered}\\\implies\quad \boxed{\sf{ R = 0.96 \;ohm}}\\\end{gathered}$

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