TRANSITION Class 10th (Science)

Magnetic Effects of Electric Current Question 1: State any two properties of magnetic field lines. Solution : Prop of magnetic field lines: (i) The magnetic field lines originate from the north pole of a magnet and end at its south pole. (ii) The strength of magnetic field is indicated by the degree of closeness of the field lines. Where the field lines are closest together, the magnetic field is the strongest there. Question 2: What are the two ways in which you can trace the magnetic field pattern of a bar magnet ? Solution : (i) By using iron filings (ii) By using compass Question 3: You are given the magnetic field pattern of a magnet. How will you find out from it where the magnetic field is the strongest ? Solution : Magnetic field is the strongest at the place where the magnetic field lines are closest together. Question 4: State whether the following statement is true or false : The axis of earth’s imaginary magnet and the geographical axis coincide wi...

1. What happens if a current carrying conductor is placed in the magnetic field? The conductor experiences a force and the direction of this force is given by Fleming’s left hand rule. 2. On what effect of an electric current does an electromagnet work? An electromagnet works on the principles of magnetic effect of current. 3. Name the alloy which is mainly used for making permanent magnets. The alloy ‘Alnico’ is used for making permanent magnets. It is an alloy of aluminium, nickel, cobalt and iron.