Activity No # 1 - Name of Activity
Materials/ Resources needed
- Bar Magnet,
- Bulb circular coil
Prerequisites/Instructions, if any
The flow of electrons is shown. The flow of current is opposite to the direction .
of the flow of electrons. “Current” is defined as the flow of (imaginary) positive charges.
We chose not to complicate the seem by showing both. To understand the direction of field in magnet:Electric current is moving charge.
Magnetic fields are created by electric currents.
The current creating the magnetic field could by the current in a wire or it could be the current created by the motion of electrons in atoms. In a permanent magnet, the electron currents in the atoms are aligned so that the net effect of all the microscopic electron currents is to make a macroscopic current which is just like the current in a solenoid. So you should think of a bar magnet as a bar shaped .
solenoid of current. The magnetic field of a bar magnet is exactly the same as the magnetic field of a solenoid since the currents are the same.
Website Interactive/Links/Simulations. : PhEt simulations
Process (How to do the activity)
Take a coil with three foils which is connected to the bulb. Moving the magnet inside circular coil. Observe that the current flowing through the circular coil and the bulb will glow. Reverse the bar magnet and move inside the circular coil then also we can see the bulb glowing. If you keep the bar magnet in stationary the bulb will not glow.
Developmental Questions (What discussion questions)
- What happens when the Bar Magnets moved inside the circular coil?
- If the Magnet reversed will the bulb will glow?
- If the Magnet kept stationary does the bulb glow?
Evaluation (Questions for assessment of the child)
- Define food
- Classify constituets of food,based on their composition
- Deficiency Disorders
- Symptoms of Deficiency Disorder
- Food protection and Preservation
- Food Adulteration
- Effects of Food Adulteration
To link back to the topic page Electromagnetic induction Main page