3 years ago

Work done on a body depends on the magnitude of the force,

Physics

1 answer:

liberstina [14]3 years ago

4 0

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Answer:

Conduction

Explanation:

When one object touches another heat moves through it (think of a saucepan on a hot stove). Aluminium foil is a great conductor of heat, which means it is a poor insulator when it is in direct contact with something hot.

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An electrochemical cell has a constant potential of 2 V and provides a steady current of 1 A. How many electrons move from the a

myrzilka [38]

Answer:

$n=6.25\times 10^{21}$

Explanation:

Potential across the electrochemical cell, V = 2 V

Current, I = 1 A

Time, t = 1000 s

Let n electrons move from the anode to the cathode. We know that electric current is calculated as :

$q=I\times t$

Also, q = ne

$ne=It$

$n=\dfrac{It}{e}$

$n=\dfrac{1\times 1000}{1.6\times 10^{-19}}$

$n=6.25\times 10^{21}$

So, $6.25\times 10^{21}$ electrons move from the anode to the cathode in 1000 seconds.

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