Recent questions tagged t8

Read the given passage below and answer the question When a conductor AB is connected across the terminals of a cell, free electrons begin to drift or move from its end B (connected to the negative terminal of the cell). The current constituted by flowing electrons is called electronic current. Clearly the direction of electronic current is from negative terminal to positive terminal. By convention the direction of motion of positive charges is taken as the direction of electric current. It is from positive terminal to negative terminal. As the electrons are negatively charged, the direction of conventional current in an electric circuit is taken as opposite to the direction of the flow of electrons Which of the following statement are not correct : 1) Both electronic current and conventional current are the same 2) Electronic current and conventional current are opposite 3) Conventional current is from positive terminal to negative terminal 4) Electronic current is from positive terminal to negative terminal

asked Oct 22, 2017 by priyanka.c

1 answer

Read the above passage and answer the questions below When a conductor AB is connected across the terminals of a cell, free electrons begin to drift or move from its end B (connected to the negative terminal of the cell). The current constituted by flowing electrons is called electronic current. Clearly the direction of electronic current is from negative terminal to positive terminal. By convention the direction of motion of positive charges is taken as the direction of electric current. It is from positive terminal to negative terminal. As the electrons are negatively charged, the direction of conventional current in an electric circuit is taken as opposite to the direction of the flow of electrons QUESTION : The electronic current

asked Oct 22, 2017 by priyanka.c

1 answer

The efficiency of an electric device is

asked Oct 22, 2017 by priyanka.c

1 answer

What is yellow spot in human eye?

asked Oct 22, 2017 by priyanka.c

1 answer

Tyndal effect occurs when

asked Oct 22, 2017 by priyanka.c

0 answers

Bifocal lenses are prescribed for persons suffering from

asked Oct 22, 2017 by priyanka.c

1 answer

The apparent depth of an object at the bottom of the tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?

asked Oct 22, 2017 by priyanka.c

2 answers

The apparent depth of an object at the bottom of the tank filled with a liquid of refractive index 1.3 is 7.7 cm. What is the actual depth of the liquid in the tank?

asked Oct 22, 2017 by priyanka.c

1 answer

Refractive index depends upon (1) Nature of the medium (2)Wavelength of the light (3) Temperature (4)Angle of incidence

asked Oct 22, 2017 by priyanka.c

1 answer

Relation between f and R is

asked Oct 22, 2017 by priyanka.c

1 answer

The power of a lens is given as +2D, then its focal length is

asked Oct 22, 2017 by priyanka.c

1 answer

__________ carbide reacts with water to give methane

asked Sep 18, 2017 by meena.p

1 answer

The hydrocarbon in which all the four valencies of carbon atoms are fully utilized are called________

asked Sep 18, 2017 by meena.p

1 answer

The product of equivalent weight and valency of an element is equal to _

asked Sep 18, 2017 by meena.p

3 answers

Which one of the following element is essential for construction is nuclear reactors?

asked Sep 18, 2017 by meena.p

1 answer

The chemical formula of caustic potash is

asked Sep 18, 2017 by meena.p

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Which is not true about the noble gases?

asked Sep 18, 2017 by meena.p

1 answer

Human bone does not contain

asked Sep 18, 2017 by meena.p

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The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?

asked Sep 18, 2017 by meena.p

1 answer

Which of the following does not belong to the same homologous series?

asked Sep 18, 2017 by meena.p

1 answer

In the double displacement reaction between aqueous potassium iodide and aqueous lead nitrate, a yellow precipitate of lead iodide is formed. While performing the activity if lead nitrate is not available, which of the following can be used in place of lead nitrate?

asked Sep 18, 2017 by meena.p

1 answer

Which of the following reactions will not take place?

asked Sep 18, 2017 by meena.p

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Which of the following metals is not attacked by the environment—

asked Sep 18, 2017 by meena.p

1 answer

The density of the gas is equal to

asked Sep 18, 2017 by meena.p

1 answer

An element X forms an oxide XO3 What is the valency of X?

asked Sep 18, 2017 by meena.p

1 answer