Physics-
General
Easy
Question
In a circuit with a coil resistance 
, the magnetic flux changes from 
to 
in 0.2 second. The charge that flows in the coil during this time is
The correct answer is:
Related Questions to study
Physics-
The current through choke coil increases from zero to 6 
in 
and an induced e.m.f. of 30 
is produced. The inductance of the coil of choke is
The current through choke coil increases from zero to 6 in and an induced e.m.f. of 30 is produced. The inductance of the coil of choke is
Physics-General
Physics-
A 50 
ac current of peak value 2 A flows through one of the pair of coils. If the mutual inductance between the pair of coils is 150 
, then the peak value of voltage induced in the second coil is
A 50 ac current of peak value 2 A flows through one of the pair of coils. If the mutual inductance between the pair of coils is 150 , then the peak value of voltage induced in the second coil is
Physics-General
Chemistry-
For the reaction, 
the equilibrium concetratio of 
and HI are 8.0, 3.0 and 28.0 mol/L respectively. The equilibrium constant of the reaction is
For the reaction, the equilibrium concetratio of and HI are 8.0, 3.0 and 28.0 mol/L respectively. The equilibrium constant of the reaction is
Chemistry-General
Chemistry-
In the reaction, 
is that part of 
which dissociates, then the number of moles at equilibrium will be
In the reaction, is that part of which dissociates, then the number of moles at equilibrium will be
Chemistry-General
Chemistry-
According to Le-Chatelier principle, adding heat a solid and liquid in equilibrium will cause the
According to Le-Chatelier principle, adding heat a solid and liquid in equilibrium will cause the
Chemistry-General
Chemistry-
The gaseous reaction, 
is most favoured at
The gaseous reaction, is most favoured at
Chemistry-General
Chemistry-
The total number of different kind of buffers obtained during the titration of 
with 
are:
The total number of different kind of buffers obtained during the titration of with are:
Chemistry-General
Chemistry-
The 
value of 
is 5. Calculate the pH of the buffer solution, 1 L of which contains 0.01 M 
The value of is 5. Calculate the pH of the buffer solution, 1 L of which contains 0.01 M
Chemistry-General
Chemistry-
The number of ions formed when 
dissolves in water is:
The number of ions formed when dissolves in water is:
Chemistry-General
Chemistry-
According to hard and soft acid-base principle, a hard acid
According to hard and soft acid-base principle, a hard acid
Chemistry-General
Chemistry-
The equilibrium constants for the reactions are: 
The equilibrium constant for 
will be:
The equilibrium constants for the reactions are: The equilibrium constant for will be:
Chemistry-General
Chemistry-
A buffer solution contains 0.1 mole of sodium acetate dissolved in 
of 0.1 M acetic acid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved. The pH of the resulting buffer is
A buffer solution contains 0.1 mole of sodium acetate dissolved in of 0.1 M acetic acid. To the above buffer solution, 0.1 mole of sodium acetate is further added and dissolved. The pH of the resulting buffer is
Chemistry-General
General
A charge q is placed at a distance a 2 above the centre of a horizontal square surface of edge a as shown in figure. The electric flux through the square surface is
A charge q is placed at a distance a 2 above the centre of a horizontal square surface of edge a as shown in figure. The electric flux through the square surface is
GeneralGeneral
Chemistry-
The pH of a 0.001 M NaOH will be
The pH of a 0.001 M NaOH will be
Chemistry-General
Chemistry-
5 moles of 
are mixed with 3 moles of 
. At equilibrium for the reaction, 
2 moles of 
are formed. The equilibrium constant for the reaction will be
5 moles of are mixed with 3 moles of . At equilibrium for the reaction, 2 moles of are formed. The equilibrium constant for the reaction will be
Chemistry-General
