## Magnetic field and Field lines

Question 1 What is a magnet? Question 2 Define the term magnetic field? Question 3 Define magnetic force? Question 4 What are magnetic lines of forces? Question 5 What does very close field lines indicate? Question 6 Define uniform magnetic field? Question 7 Define non-uniform magnetic field? Question 8 Draw the pattern of field lines…

## Electric Motor

Question 1 What is an electric motor? Question 2 On what principle does electric motor works? Question 3 Explain the construction of electric motor? Question 4 Give commercial use of electric motor? Question 5 Give uses of D.C. motor? Electric Motor It converts electrical energy into mechanical energy. Principle A current carrying conductor placed perpendicular…

## Factors on which the force acting on current carrying conductor depends

Question 1 Name the factors on which the force acting on current carrying conductor depends? Factors on which the force acting on current carrying conductor depends 1)Strength of Magnetic Field Force is directly proportional to strength of magnetic field. 2)Strength of electric field Force is directly proportional to strength of magnetic field. 3)Length of conductor….

## Force on a current carrying conductor in a magnetic field

Question 1 Define Fleming’s left hand rule? Force on a current carrying conductor in a magnetic field When a current carrying conductor is placed in a magnetic field,the conductor experiences a force. 1)Take a small aluminium rod.Using two connecting wires suspend it horizontally from a stand. 2)Place a strong horse-shoe magnet in such a way…

## Magnetic field due to a current in a solenoid

Question 1 What is a solenoid? Question 2 Draw the pattern of field lines due to a solenoid carrying electric current? Magnetic field due to a current in a solenoid A solenoid is a coil of many turns of an insulated copper wire closely wound in the shape of a tight spring. When an electric…

## Magnetic field due to a current through circular loop

Question 1 Draw the pattern of lines of force due to a magnetic field through a current carrying circular loop of wire? Question 2 How does the strength of the magnetic field at the centre of a circular coil of wire depends on the radius of coil? Question 3 How does the strength of the magnetic…

## Right hand Thumb Rule

Question 1 State Fleming’s Right hand thumb rule? Right hand Thumb Rule If a current carrying conductor is imagined to be held in right hand such that thumb points in direction of current,then curled fingers of hand indicate the direction of magnetic field. If current flows in upward direction then direction will be anticlockwise. If…

## Magnetic Field due to a current through a straight conductor

Question 1 On what factors does the intensity of magnetic field due to current carrying conductor depends? Magnetic  Field due to a current through a straight conductor 1)Take a battery,rheostat,an ammeter,a plug key and a long straight thick copper wire. 2)Insert the thick wire through the centre,normal to the plane of a rectangular cardboard.Take care…

## Magnetic field lines due to current carrying conductor

Question 1 Draw the pattern of line of forces due to magnetic field associated with a current carrying straight conductor? Question 2 How the magnetic field produce changes with an increase in current in the straight conductor? Magnetic field lines due to current carrying conductor When a conductor carries current,a magnetic field is set up…