"I" Shaped Electromagnet

Q. Difference between solenoid and electromagnet ?

Q. Statement I: The poles of an electromagnet are not affected by changing the direction of the current in the coil.
Statement II: Electromagnets cannot be made more powerful than ordinary bar magnets.

1. 
   Statement I is correct and statement II is incorrect.
2. Statement I is incorrect and statement II is correct.
3. 
   Both the statements are correct.
4. 
   Both the statements are incorrect.

Q. State two ways by which the strength of the magnetic field of an electromagnet can be increased?

Q.

What is a difference between a solenoid and an electromagnet?

Q. What are the possible way(s) by which the strength of an electromagnet can be increased?
1. Decreasing the number of turns in the coil
2. Increasing the current in the coil
3. Using a plastic core inside the coil​
4. Reversing the current direction in the coil

1. 1 and 3 only​
2. 1 and 2​ only
3. 2 and 4 only
4. 2 only

Q. Which of the following is the most suitable material for making an electromagnet?

1. Brass
2. Aluminium
3. Soft iron
4. Wood

Q.

what qualitiesa good electro magnet should have ?

Q.

which metal is used in electromagnet

Q. How is an electromagnet made? Name two factors on which the strength of the magnetic field of an electromagnet depends.

Q. Name the material used for preparing an electromagnet.

Q. You are required to make an electromagnet from a soft iron bar by using a cell, an insulated coil of copper wire and a switch.
(a) Draw a circuit diagram to represent the process.
(b) Label the poles of the electromagnet.

Q. Show with the aid of a diagram how a wire is wound on a U-shaped piece of soft iron in order to make it an electromagnet. Complete the circuit diagram and label the poles of the electromagnet.