Physics-
General
Easy
Question
A circular coil has 250 turns and a mean diameter of 20 cm. It carries a current of 5A. What is the strength of the magnetic field at a point on its axis at a distance of 5 m from the centre of the coil?
The correct answer is:
Since 
=
=
Related Questions to study
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The magnetic field of a current carrying coil of radius r at a distance 
(>>r) from the centre of the coil varies as
The magnetic field of a current carrying coil of radius r at a distance (>>r) from the centre of the coil varies as
Physics-General
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A galvanometer has resistance G and a current 
flowing in it produces full scale deflection. 
is the value of the shunt, which converts it into an ammeter of range O-I and 
is the value of the shunt for the range O-2I. The ratio 
is :
A galvanometer has resistance G and a current flowing in it produces full scale deflection. is the value of the shunt, which converts it into an ammeter of range O-I and is the value of the shunt for the range O-2I. The ratio is :
Physics-General
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Specific charge on a proton is 
C/Kg. A proton is moving in a magnetic field of IT in circular path of 0.5 m radius. The energy of proton in MeV is:
Specific charge on a proton is C/Kg. A proton is moving in a magnetic field of IT in circular path of 0.5 m radius. The energy of proton in MeV is:
Physics-General
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The minimum value of V0 such that ultimately it rolls on the upper surface. If distance AB is very large. (S is perfectly rough and V0 = 
)
The minimum value of V0 such that ultimately it rolls on the upper surface. If distance AB is very large. (S is perfectly rough and V0 = )
Physics-General
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The angular velocity of a wheel increases from 1200 rpm to 4500 rpm in 10 s. The number of revolution made during this time is
The angular velocity of a wheel increases from 1200 rpm to 4500 rpm in 10 s. The number of revolution made during this time is
Physics-General
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A uniform thin rod of mass M and length L is standing vertically along the Y–axis on a smooth horizontal surface with its lower end at origin (0, 0). A slight disturbance at t = 0 causes the lower end to slip on smooth surface along the positive X–axis and the rod starts falling. The path followed by the centre of mass of the rod during its fall is a/an.
A uniform thin rod of mass M and length L is standing vertically along the Y–axis on a smooth horizontal surface with its lower end at origin (0, 0). A slight disturbance at t = 0 causes the lower end to slip on smooth surface along the positive X–axis and the rod starts falling. The path followed by the centre of mass of the rod during its fall is a/an.
Physics-General
Chemistry-
At 
, the vapour pressures of pure liquids, benzene and toluene are 160 mm Hg and 60 mm Hg, respectively.At the same temperature, the vapour pressure of an equimolar solution of the two liquids, assuming the ideal solution, should be
At , the vapour pressures of pure liquids, benzene and toluene are 160 mm Hg and 60 mm Hg, respectively.At the same temperature, the vapour pressure of an equimolar solution of the two liquids, assuming the ideal solution, should be
Chemistry-General
Chemistry-
The molecular weight of benzoic acid in benzene as determined by depression in the freezing point method corresponds to
The molecular weight of benzoic acid in benzene as determined by depression in the freezing point method corresponds to
Chemistry-General
Chemistry-
When mercuric iodide is added to the aqueous solution of potassium iodide,
When mercuric iodide is added to the aqueous solution of potassium iodide,
Chemistry-General
Chemistry-
An example of colligative property is
An example of colligative property is
Chemistry-General
Chemistry-
A molal solution is one that contains 1 mol of a solute in
A molal solution is one that contains 1 mol of a solute in
Chemistry-General
Chemistry-
Which condition is not satisfied by an ideal solution?
Which condition is not satisfied by an ideal solution?
Chemistry-General
Chemistry-
Based on the given diagram, which of the following statements regarding the solutions of two miscible volatile liquids are correct?
1.Plots AD and BC show that Raoult''s law is obeyed for the solution in which B is a solvent and A is the solute and as well as for that in which. A is solvent and B is solute
2.Plot CD shows that Dalton''s law of partial pressures is observed by the binary solutions of components A and B
3.
; and AC and BD corresponds to the vapour pressures of the pure solvents A andB,respectively
Select the correct answer using the codes given below: Codes:
Based on the given diagram, which of the following statements regarding the solutions of two miscible volatile liquids are correct?
1.Plots AD and BC show that Raoult''s law is obeyed for the solution in which B is a solvent and A is the solute and as well as for that in which. A is solvent and B is solute
2.Plot CD shows that Dalton''s law of partial pressures is observed by the binary solutions of components A and B
3.; and AC and BD corresponds to the vapour pressures of the pure solvents A andB,respectively
Select the correct answer using the codes given below: Codes:
Chemistry-General
Chemistry-
For a dilute solution, Raoult’s law states that
For a dilute solution, Raoult’s law states that
Chemistry-General
Chemistry-
A mixture of benzene and toluene forms
A mixture of benzene and toluene forms
Chemistry-General
