A long solenoid of length 3m has 4000 turns. Find the current through the solenoid if the magnetic field produced at the centre of the solenoid along its axis is 8 × 10-3T.

Of the following devices, which has small resistance?

(a) moving coil galvanometer

(b) ammeter of range 0 – 1A

(c) ammeter of range 0–10 A

(d) voltmeter

What do you mean by electromagnetic Lorentz force  ?

Who discovered the phenomenon  of magnetic field due to the presence of current in a conductor ?

Draw the path of a charged particle in a cyclotron ?

A 100 turns closely wound circular coil of radius 10 cm carries a current of 3.2 A . A coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 2 T rotates the coil through 90^o . What is the torque on the coil ?

A 100 turns closely wound circular coil of radius 10 cm carries a current of 3.2 A .What is the magnetic moment adssociated with it ?

A 100 turns closely wound circular coil of radius 10 cm carries a current of 3.2 A . What is the field at the centre of the coil ?

How can we increase the current sensitivty of a moving coil galvanometer ?

What do you mean by current sensitivity ?

Explains the construction and the working of moving coil galvanometer ?

What is the speciality of a moving coil galvanometer ?

What is the principle of a moving coil galvanometer ?

Write the value of Bohr magneton ?

wirite the value of gyromagnetic ratio?

What is gyromagnetic ratio ?

Explains the angular momentum of electron ?

What happens to a rectangular current loop  placed in a uniform magnetic field ?

Define one Ampere ?

write the eqation of the intensity of magnetic field at the center of a current carrying toroid?

What is a toroid ?

What is the value of  magnetic field out side a current carrying solenoid ?

What is the magnetic field at one end along the axis of a current carrying solenoid ?

What is the magnetic field at the centre along the axis of a current carrying solenoid ?

Write the expression for the magnetic field at the centre of a current loop ?

State and explain Biot-Savart law ?

What is the SI unit of magnetic field ?

A cyclotron oscillator frequency is 10 MHz is applied to the dees of radius 60 cm. What is the kinetic energy in MeV of the proton beam produced by the accelerator , if the operating magnetic field is 0.66 T ?(e = 1.60 x10^-19 C ,m_p = 1.67 x 10^-27 kg )

A cyclotron oscillator frequency is 10 MHz is applied to the dees of radius 60 cm. What is the kinetic energy in MeV of the proton beam produced by the accelerator , if the operating magnetic field is 0.66 T ?(e = 1.60 x10^-19 C ,m_p = 1.67 x 10^-27 kg )

A cyclotron oscillator frequency is 10 MHz. What should be the operating magnetic field for accelerating protons ? ( e = 1.60 x 10^-19 C ,mp = 1.67 x 10^-27 kg )

Write the expression for speed of a charged particle in a cylotron ?

Write the expression for energy acquired by a charged particle in a cyclotron and mention the terms ?

What is a cyclotron ?

What is cyclotron frequency ?

Mention the principle of Cyclotron ?

What is velocity selector ?

What is the frequency of electron moving with a speed of 3 x 10⁷ ms^-1 in a magnetic field of 6 x 10^-4 T perpendicular to it traces a radius 26 cm? [ Given mass of electro 9.1 x 10^-31 kg and charge of electro 1.6 x 10^-19 ]

How will you convert a galvanometer into voltmeter ? Explain

Calculate the maximum kinetic energy of the proton ejected from the cyclotron with dee of radius 2 m .The dees are applied with a uniform magnetic field of 0.8 T ?