Three types of electric cells which provide current are:

Button cell, solar cell & secondary ceil

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Solar cell, electrolytic cell, electro chemical cell

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(A) and (B) both are correct

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Neither (A) nor (B) is correct

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Solution

The correct option is C (A) and (B) both are correct
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.

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Primary cells provide current as a result of reversible reaction whereas, Secondary cells provide current as a result of irreversible reaction.

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Q. (a) Six lead-acid type of secondary cells each of emf 2.0 V and internalresistance 0.015 W are joined in series to provide a supply to aresistance of 8.5 W. What are the current drawn from the supplyand its terminal voltage? (b) A secondary cell after long use has an emf of 1.9 V and a largeinternal resistance of 380 W. What maximum current can be drawnfrom the cell? Could the cell drive the starting motor of a car?

The human body contains a large number of cells A which are very long and branched, and look like electric wires. The longest branch of this cell is B whereas there are many small branches C. Any two A cells do not join to one another completely in the human body. There is a microscopic gap D between every pair of adjacent A cells through which electric impulses can pass by the release of a chemical substance.

(a) What are cells A ?

(b) What is the name of (i) branch B, and (ii) branches C ?

(d) What is the function of cells like A in the human body ?

(e) The cells A are of three types. Name the three types.

(a) Six lead-acid type of secondary cells each of emf 2.0 V and internal resistance 0.015 Ω are joined in series to provide a supply to a resistance of 8.5 Ω. What are the current drawn from the supply and its terminal voltage?

(b) A secondary cell after long use has an emf of 1.9 V and a large internal resistance of 380 Ω. What maximum current can be drawn from the cell? Could the cell drive the starting motor of a car?

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