Tag: study about cells

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Multiple choice physics chemical effects of electric current study about cells electric cell types of cells

A cell in which chemical energy is converted into electric energy by first passing a current through it is called a _________.

  1. Primary cell

  2. Secondary cell

  3. Photocell

  4. Electrostatic machine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The cell in which chemical energy is converted into electrical energy is called a primary cell. Leclanche cell, Daniel cell, Voltaic cell are all primary cells and not the storage cells.

Multiple choice physics chemical effects of electric current study about cells electric cell types of cells

In torch light cell is used as source of which energy ?

  1. Electrical Energy

  2. Mechanical Energy

  3. Chemical Energy

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In torch light, cell is used as a source of electrical energy.

As electrical cell internally converts stored chemical energy into electrical energy, allowing a current to flow from the positive terminal round to the negative one via an external circuit .

Multiple choice physics chemical effects of electric current study about cells electric cell types of cells

Which of the following is the purpose of an electrical cell?

  1. To change mechanical energy to electrical energy

  2. To change chemical energy to electrical energy

  3. To change electrical energy to mechanical energy

  4. To change electrical energy to chemical energy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An electrical cell is an "electrical power supply" - internally it converts stored chemical energy into electrical potential energy, allowing a current to flow from the positive terminal round to the negative one via an external circuit (this is called conventional current, which is chosen to go from + to -).

Multiple choice physics chemical effects of electric current study about cells electric cell types of cells

State whether true or false :

Do not connect the two terminals of a cell with a single wire.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

We should not connect the two terminals of the cell with a wire without an appliance connected in a circuit. This is because by doing so, chemicals in the cell gets used up quickly and after sometime cell will stop working.

Multiple choice physics chemical effects of electric current study about cells electric cell types of cells

 What are the three basic parts of a cell?

  1. Electrodes, electrolyte, container

  2. Electrodes, acid, water

  3. Anode, cathode, ions

  4. Anode, load, depolarize
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A cell is basically a source of energy or electrical energy; there are three basic things required to make a cell work.

$i)$ The source of energy,(electrolyte)
$ii)$ The conduction medium to transfer energy (electrodes)
$iii)$ The contained to stare the energy. 

Multiple choice physics chemical effects of electric current study about cells electric cell types of cells

How many different colors of wire are needed to ignite the bulb when connected with cell ?

  1. 2

  2. 1

  3. 4

  4. 6
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

There are two wires needed to connect and ignite the bulb when connected with cell.

$(i)$ To connect the terminal of the cell to the terminal of the bulb.
$(ii)$ The tungsten wire which will get lighten up.
Option $A$ is the correct answer. 

Multiple choice physics electric current through conductors study about cells electric cell types of cells

What is the $-$ve terminal of dry cell made up of?

  1. Carbon rod

  2. Zinc plate

  3. Magnesium plate

  4. Cadmium rod
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The dry cell consists of a zinc can, electrolyte paste, and a carbon rod in the center. A chemical reaction takes place between the zinc can and the paste. Electrons flow from the negative (zinc) terminal to the positive (carbon) terminal. Electrons are then pumped back to the negative terminal.
Multiple choice physics electric current through conductors study about cells electric cell types of cells

In secondary cells:

  1. Chemical changes can be reversed by heating electrodes

  2. Chemical changes can be reversed by passing electric current

  3. Current is produced by photo chemical reactions

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Answer is B.

When a primary cell is used, chemical reactions in the battery use up the chemicals that generate the power; when they are gone, the battery stops producing electricity and is useless. In contrast, in a secondary cell, the reaction can be reversed by running a current into the cell with a battery charger to recharge it, regenerating the chemical reactants. 

Multiple choice physics electric current through conductors study about cells electric cell types of cells

Three types of electric cells which provide current are:

  1. Button cell, solar cell & secondary cell

  2. Solar cell, electrolytic cell, electro chemical cell
  3. $(A)$ and $(B)$ both are correct
  4. Neither $(A)$ nor $(B)$ is correct
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Answer is C.

When a primary cell is used, chemical reactions in the battery use up the chemicals that generate the power; when they are gone, the battery stops producing electricity and is useless. In contrast, in a secondary cell, the reaction can be reversed by running a current into the cell with a battery charger to recharge it, regenerating the chemical reactants. 
The types of cells mentioned in option A and option are correct.
Hence, option C is correct.