A conductivity cell filled with 0.1 M solution of KCI registers a resistance of&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>25.0</mn><mi mathvariant="normal">Ω</mi></math>&nbsp;. If the cell constant of the cell is&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>0.25</mn><msup><mi>cm</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup></math>, the conductivity of the solution would be

A spherical conducting ball is suspended by a thread which is insulator. A positive point charge is moved near the ball. The ball will&nbsp;

A copper sphere of mass 2.0 g contains about 2 x 1022 atoms. The charge on the nucleus of each atom is 29 e (e = electronic charge). The mass of an electron is 9.11 x 10-31kg.How much mass will the sphere lose or gain if it is given a charge of +2&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mi>μ</mi></math>C?

Identify, which of the following is a best insulator out of the given options ?

Two copper balls, each weighing 20 g are kept in air 10 cm apart. If one electron from every 106 atoms is transferred from one ball to the other, the coulomb force between them is (atomic weight of copper is 63.5)

Deduce from the following&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msup><mi mathvariant="normal">E</mi><mo>⊝</mo></msup></math>values&nbsp;of half cells, what combination of two half cells would results in a cell with&nbsp;the largest potential ?<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">I</mi><mo>.</mo><mo>&nbsp;</mo><mi mathvariant="normal">A</mi><mo>+</mo><msup><mi mathvariant="normal">e</mi><mo>-</mo></msup><mo>→</mo><msup><mi mathvariant="normal">A</mi><mo>⊝</mo></msup><mo>,</mo><mo>&nbsp;</mo><msup><mi mathvariant="normal">E</mi><mo>⊝</mo></msup><mo>=</mo><mo>-</mo><mn>0</mn><mo>.</mo><mn>24</mn><mo>&nbsp;</mo><mi mathvariant="normal">V</mi><mspace linebreak="newline">&nbsp;</mspace><mi>II</mi><mo>.</mo><mo>&nbsp;</mo><msup><mi mathvariant="normal">B</mi><mo>⊝</mo></msup><mo>+</mo><msup><mi mathvariant="normal">e</mi><mo>-</mo></msup><mo>→</mo><msup><mi mathvariant="normal">B</mi><mrow><mn>2</mn><mo>-</mo></mrow></msup><mo>,</mo><mo>&nbsp;</mo><msup><mi mathvariant="normal">E</mi><mo>⊝</mo></msup><mo>=</mo><mo>+</mo><mn>1</mn><mo>.</mo><mn>25</mn><mi mathvariant="normal">V</mi><mspace linebreak="newline">&nbsp;</mspace><mi>III</mi><mo>.</mo><mo>&nbsp;</mo><msup><mi mathvariant="normal">C</mi><mo>⊝</mo></msup><mo>+</mo><mn>2</mn><msup><mi mathvariant="normal">e</mi><mo>-</mo></msup><mo>→</mo><msup><mi mathvariant="normal">C</mi><mrow><mn>3</mn><mo>-</mo></mrow></msup><mo>;</mo><mo>&nbsp;</mo><msup><mi mathvariant="normal">E</mi><mo>⊝</mo></msup><mo>=</mo><mo>−</mo><mn>1</mn><mo>.</mo><mn>25</mn><mi mathvariant="normal">V</mi><mspace linebreak="newline">&nbsp;</mspace><mi>IV</mi><mo>.</mo><mo>&nbsp;</mo><mi mathvariant="normal">A</mi><mo>+</mo><mn>2</mn><msup><mi mathvariant="normal">e</mi><mo>-</mo></msup><mo>→</mo><msup><mi mathvariant="normal">D</mi><mrow><mn>2</mn><mo>-</mo></mrow></msup><mo>&nbsp;</mo><mo>&nbsp;</mo><mo>;</mo><msup><mi mathvariant="normal">E</mi><mo>⊝</mo></msup><mo>=</mo><mo>+</mo><mn>0</mn><mo>.</mo><mn>68</mn><mi mathvariant="normal">V</mi></math>

A conductivity cell filled with 0.1 M solution of KCI registers a resistance of $25.0 Ω$ . If the cell constant of the cell is $0.25 {cm}^{- 1}$ , the conductivity of the solution would be

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A conductivity cell filled with 0.1 M solution of KCI registers a resistance of 25.0Ω . If the cell constant of the cell is 0.25cm−1, the conductivity of the solution would be

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A conductivity cell filled with 0.1 M solution of KCI registers a resistance of $25.0 Ω$ . If the cell constant of the cell is $0.25 {cm}^{- 1}$ , the conductivity of the solution would be