Academic Questions & Answers Forum

What is a ballistic galvanometer and what is its principle?

What is the work done by a magnetic field on a moving charge?

What is right hand thumb rule?

Two identical charged particles moving with the same speed enter a region of uniform magnetic field. If one of these enters normal to the field direction and the other enters along a direction at 30° with the field, what would be the ratio of their angular frequencies?

A closely wound soleniod 80 cm long has 5 layers of winding of 400 turns each. The diameter of the solenoid is 1.8 cm. If the current carried is 8.0 A, estimate the magnitude of magnetic field inside the solenoid near its centre.

If a charged particle is thrown with a velocity v making an angle ø with magnetic field (ø is not equal to 90 degrees or 0 degrees) then i will travel helical motion due to magnetic force acting on the charged particle and due to the component of velocity along the direction of the magnetic field.But if we want to find the direction of resultant velocity of the charged particle at any instant during its helical motion then the magnitude of resultant velocity would be same as that of the velocity by which it thrown in the field(i.e v),but the direction of this speed (resultant velocity) at any instant of helical motion would be found by finding the resultant velocity vector of the horizontal component of velocity(along field) and the velocity component tangential at that point on the circular motion of charged particle.I WANT TO ONLY KNOW THAT IT IS CORRECT OR NOT??

What is the principle of cyclotron???

Considering the case of a parallel plate capacitor being charged show how one is required to generalise Amperes circuital law to include the term due to displacement current?

Projectile motion