Call me

Have a Query? We will call you right away.

+91

E.g: 9876543210, 01112345678

We will give you a call shortly, Thank You

Office hours: 9:00 am to 9:00 pm IST (7 days a week)

What are you looking for?

Syllabus

Explain the principle ,working and construction of moving coil galvanometer.

- independent magnetic field, is pulled out with constant velocity as shown

in the figure.

a) Sketch the variation of magnetic flux, the induced current, and

power dissipated as Joule heat as function of time.

b) If instead of rectangular loop, circular loop is pulled out; do you

expect the same value of induced current? Justify your answer.

Sketch the variation of flux in this case with time.?

Explain the working and principle of CYCLOTRON!!!WITH DIAGRAM!!

what is the proper statement forbiot savart's law?Define magnetic inclination and horizontal component os earth's magnetic field at a place.Establish relaation b/w the two with the help of diagram.

construction and working of moving coil galvanometer

why do we need a radial field in moving coil galvanometer??

what is current sensitivity nd voltage sensitivity...define maximum

A solenoid of 300 turns/m is carrying a current of 5A.The length of the solenoid is 0.5m and has a radius of 1cm.Find the magnitude of magnetic field inside the solenoid.

A CYCLOTRON,S OSCILLATOR FREQUENCY IS 10 MHz. WHAT SHOULD BE THE OPERATING MAGNETIC FIELD FOR ACCELERATING PROTONS? IF THE RADIUS OF ITS DEES IS 60cm, WHAT IS THE KINETIC ENERGY OF THE PROTON BEAM PRODUCED BY THE ACCELERATOR? EXPRESS YOUR ANSWER IN MeV.a straight long thick wire of uniform cross section of radius 'a' is carrying a steady current I.use ampere's circuital law to obtain a relation showing the variation of magnetic field (B) inside the wire with distance r , (r<=a) and(r>a) of the field point from the center of its cross section .Plot a graph showing the nature of this variation.

Calculate the ratio of the magnetic field at a point a/2 above the surface of the wire to that at a point a/2 below its surface.What is the max value of the field of this wire?

what is cyclotron and how it works?

Which one will experience maximum force when projected with the same velocity 'v' perpendicular to the magnetic field B, alpha particle or beta particle?

What is resonance condition in cyclotron? How is it used to accelerate the charged particles ?

_{2}O_{7, }oxidizes 2 moles of ferrous oxalate in acidic medium, then what is the value of x?ans. 1

plz explain

what is the main difference between solenoid and toroid?

17 (a) an infinitely long positively charged straight wire has a linear charge density of lamda cm(inverse). and electron is revolving around the wire as its centre with a constant velocity in a circular plane perpendicular to the wire. deduce the expression for its kinetic energy.

(b) plot a graph of the kinetic energy as a function of charge density lamda.

what r the limitations of cyclotron?

Please give the derivation of Magnetic Field at

1: Axial Position

2: Equatorial Position

what is the relation between between the current and the magnetic moment of a current carrying circular loop ? use this expression derive the relation between the magnetic moment of an electron moving in a circle and its related angular momentum?

Define

dielectric constant of a mediumin terms ofbetweenforceelectric charges.work done to move a charge along a closed path inside an electric path inside an electric field is always zero using this fact prove that it is impossible to produce an electric field in which all field lines would be parallel and density of their distirbution would constantly increase in a direction perpendicular to the field line

Q - Write the expression for the force acting on a charged particle of charge

(q)moving with a velocity(v) in the presence of magnetic field(B). show that in presence of this force :(i) the Kinetic Energy of particle does not change.

(ii) Instantaneous power is zero.

State Ampere's Circuital Law. Use it to derive the magnetic field along the axis of a current carrying solenoid of length 'l' having 'n' number of turns.

the horizontal component of earth's magnetic field at a place is 0.4 x 10

^{-4}wb/m^{2}and angle of dip is 30 degrees.caluclate the veritical component and the total intensity of earth's magnetic field(1) $\frac{\mathrm{n}{\mu}_{0}\mathrm{I}}{\mathrm{\pi a}}\mathrm{sin}\left(\frac{\mathrm{\pi}}{\mathrm{n}}\right)\mathrm{cot}\left(\frac{\mathrm{\pi}}{\mathrm{n}}\right)$ (2) $\frac{{\displaystyle \mathrm{n}{\mu}_{0}\mathrm{I}}}{{\displaystyle \mathrm{\pi a}}}\mathrm{cos}\left(\frac{{\displaystyle \mathrm{\pi}}}{{\displaystyle \mathrm{n}}}\right)\mathrm{tan}\left(\frac{{\displaystyle \mathrm{\pi}}}{{\displaystyle \mathrm{n}}}\right)$

(3) $\frac{{\displaystyle \mathrm{n}{\mu}_{0}\mathrm{I}}}{{\displaystyle \mathrm{\pi a}}}\mathrm{sin}\left(\frac{{\displaystyle \mathrm{\pi}}}{{\displaystyle \mathrm{n}}}\right)\mathrm{tan}\left(\frac{{\displaystyle \mathrm{\pi}}}{{\displaystyle \mathrm{n}}}\right)$ (4) $\frac{{\displaystyle \mathrm{n}{\mu}_{0}\mathrm{I}}}{{\displaystyle \mathrm{\pi a}}}$

defnation of ampere's circuital law

why does a moving charge experience a force in a magnetic field?

what is the function of the soft iron core in a moving coil galvanometer

A weight Mg is suspended from the middle of a rope whose ends are at the same level. The rope is no longer horizontal. The minimum tension required to completely straighten the rope is ????(1) Mg/2 ......(2) Mgcos (theta).......(3) 2Mgcos ( theta) ....(4) Infinitely large......

An electron travels in a circular path of radius 20cm in a magnetic field of 2x10^-3 T. Calculate the speed of the electron. What is the potential difference through which the electron must be accelerated to acquire this speed?

why magnetic field lines form closed curve ??

If the current sensitivity of a moving coil galvanometer is increased by 20%, its resistance also increases by 1.5 times.How will the voltage sensitivity of galvanometer be affected?

what is direction of force acting on charged particle q,moving with velocity v in uniform mg. field?

1) 2v/B

^{2}R^{2}2)v/2BR

pl show the method.[the ans- (1)]

A coil of N turns and radius R carries a current I. It is unwound and rewound to make another

coil of radius R/2, current remaining the same. Calculate the ratio of the magnetic moment of the

new coil and original coil.

Q.44. If diffraction occurs through a single slit then intensity of first secondary maxima become ............... of central maxima :-

(1) 4%

(2) 25%

(3) 75%

(d) 50%

magnetic field lines can be entirely confined within the core of a toroid but not within a straight solenoid. Why?

Please explain me first the meaning of the question and then the answer

1. 0.1V/M 2. 1.0V/M 3. 10.0 V/M 4. 100 V/M

A circular coil of 25 turns and radius 6 cm, carrying a current of 10 A, is suspended vertically in a uniform magnetic field of magnitude 1.2 T. The field lines run horizontally in the plane of the coil. Calculate the force and torque on the coil due to the magnetic field.

In which direction, should a balancing torque be applied to prevent the coil from turning?state amperes circuital law??????????????

Two identical circular loops, P and Q, each of radius r and carrying currents I and 2I respectively are lying in parallel plans such that they have a common axis.

The direction of current in both the loops is clockwise as seen from center . Find the magnitude of the net magnetic field at the center.

1) The capacitor remains connected to the same battery

2) The capacitor is disconnected from the battery

find the torque on 100 turns rectangular coil of

size 40cm*20cm,carrying a current of 10A and placed at an angle of 60 degree with the magnetic field of 5.0T.

answer is 200N

Two point charges, q1 and q2, are located at points (a, o, o) and (o, b, o)

respectively. Find the electric field, due to both these charges, at the point,

(o, o, c).

An electron moving with Kinetic Energy 25keV moves perpendicular to a uniform magnetic field of 0.2mT. Calculate the time period of rotation of electron in the magnetic field. plz answer it fast!!!!!!!!!!!

placed with its longer side parallel to a long straight conductor 2cm apart carrying of 25A. What

is the net force on the loop?

a straight wire of length L carrying current I stays suspended horizontally in mid air in a region of uniform magnetic field B. the linear mass density of wire is lambda . obtain the magnitude and direction of magnetic field..

An electron after being accelerated through a potential difference of 10

^{4}_{ }Volt enters a uniform magnetic field of 0.04T perpendicular to its direction of motion.Calculate the radius of curvature of its trejectory?what are the application and limitation of ampere's circuital law

Sketch the graph showing variation of resistivity of carbon with temperature

what is the SI unit of current sensitivity in moving coil galvanometer?

a current of 10 A is flowing east to west in a long wire kept horizontally in east west direction. find magnetic field and its direction in the horizontal plane at a distance of

(i)10 cm north

(ii) 20 cm south from the wire.

and in the verical plane at a distance of

(i)40 cm downward

(ii)50 cm upward.

A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a permanent magnet such that B vector is in plane of the coil. if due to a current i in the triangle a torque torque acts on it, the side l of the triangle is

How to Convert, Galvanometer into a Voltmeter?

What is pitch of the helical path followed by a charged particle moving along and making an angle θ with the magnetc field ?

Calculate the Magnetic field induction at the centre of a coil bent in the form of square of side 10cm carrying current of 10A.

velocity v towards East. The vertical component of

earth magnetic field is B and angle of dip is θ. The

induced e.m.f. in rod is

(1) Blv cot θ (2) Blv sin θ

(3) Blv tan θ (4) Blv cos θ

A beam of alpha particles projected along +x axis, experience a force due to magnitic field along the +y axis. What is the direction of the magnetic field?

If the magnetic monopoles were to exist, how would the gauss's law of magnetism get modified ?

how to find refractive index of aliquid using plane mirror and convex lens

calculate force per unit length on a long straight wire carrying vurrent of 4A due to a parallel wire carrying 6A distance between the wire is 3cm

State two factors on which sensitivity of a moving coil galvanometer depends?

_{2 }in the following reaction.MnO

_{2 }-> Mn^{+2 }+ MnO_{4}^{-}ans. 5M/6

plz explain.

an alpha particle and a proton are released from the centre of the cyclotron and made to accelerate 1. can both be accelerated at the same cyclotron frequency give reason 2.when they are accelerated in turn which of the two will have higher velocity at the exit of the dees.

an electron accelerated by a potential difference of 300V ,is moving at a distance of 4mm from a long staight wire.If current of 5A flows through the wire,what will be the force acting on the electron?

ans is 4*10^-16N

V