Physics-
General
Easy
Question
In an induction coil with resistance, the induced emf will be maximum when
- The switch is put on due to high resistance
- The switch is put off due to high resistance
- The switch is put on due to low resistance
- The switch is put off due to low resistance
The correct answer is: The switch is put off due to high resistance
Related Questions to study
Physics-
A magnet N-S is suspended from a spring and when it oscillates, the magnet moves in and out of the coil C. The coil is connected to a galvanometer G. Then, as the magnet oscillates
A magnet N-S is suspended from a spring and when it oscillates, the magnet moves in and out of the coil C. The coil is connected to a galvanometer G. Then, as the magnet oscillates
Physics-General
Physics-General
Physics-
Energy associated with a moving charge is due to
Energy associated with a moving charge is due to
Physics-General
Physics-
Shown in the figure is a circular loop of radius and resistance . A variable magnetic field of induction is established inside the coil. If the key () is closed, the electrical power developed right after closing the switch is equal to
Shown in the figure is a circular loop of radius and resistance . A variable magnetic field of induction is established inside the coil. If the key () is closed, the electrical power developed right after closing the switch is equal to
Physics-General
Physics-General
Physics-
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
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
Physics-General
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