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3 years ago

Why is cathode positive in leclanche cell??

Physics

1 answer:

laila [671]3 years ago

7 0

Answer:

Because the zinc is reluctant

Explanation:

A leclanche cell contains a conducting solution (electrolyte) of ammonium chloride, a cathode (positive terminal) of carbon, a depolarizer of manganese dioxide (oxidizer), and an anode (negative terminal) of zinc (reductant).

As the Zn2+ ions move away from the anode, leaving their electrons on its surface,

Zn → Zn2+ + 2e−

the anode becomes more negatively charged than the cathode. When the cell is connected to an external electrical circuit, the excess electrons on the zinc anode flow through the circuit to the carbon rod, the movement of electrons forming an electric current.

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Compare your answer to the previous question with your observations in conducting this experiment. Discuss whether energy was co

Rudiy27

No, Friction was not Negligible. If you push a block on a surface, it will not continue to move unless you are still pushing it.

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3 years ago

The strength of the electric field 0.5 m from a 6 µc charge is n/c. (use k = 8.99 × 109 n•meters squared per coulomb squared and

Kruka [31]

The strength of the electric field will be 215760 NC⁻¹. The concept of the electric field strength is used in the problem.

<h3>What is electric file strength?</h3>

The electric field strength is defined as the ratio of electric force and charge. Its unit is NC⁻¹.

The given data in the problem is;

E is the Electric Field Strength

k is the Colomb's constant = 8.99 x 10⁹ N.m²/C²

q is the magnitude of charge = 6 μC = 6 x 10⁻⁶ C

r is the distance = 0.5 m

The electric field strength is given by the formula;

$\rm E = \frac{Kq}{R^2} \\\\ \rm E = \frac{8 .99 \times 10^9 6 \times 10^6 }{(0.5)^2} \\\\ E=215760 \ NC^{-1}$

Hence the strength of the electric field will be 215760 NC⁻¹.

To learn more about the electric field strength refer to the link;

brainly.com/question/4264413

6 0

2 years ago

Mechanical energy Is __________ when there are no forces causing an object to lose energy.

nydimaria [60]

B conserved...........

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3 years ago

Read 2 more answers

Describe what physical meaning is attributed to ψ 2

NNADVOKAT [17]

In quantum mechanics, $\psi^2$ the basic wave function has no physical meaning or significance. However, $|\psi|^2$ represents the probability distribution of particle in a given space.

Probability $\propto$ $|\psi|^2$

So when you will put a position and a time in $\psi^2$ function, it will give you the probability of finding the particle at that particular position and at the given time.

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3 years ago

How much voltage is found in a line restance of 10ohms and a current of 20 amps

Aleks04 [339]

Hello,

According to Ohm's Law,

V=IR

where v=Voltage, I=Current, and R= resistance.

So, if we take a line resistance of 10 ohms, and a current of 20 amps we get

200 Volts.

Hope this helped.

5 0

3 years ago