Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Class 10 : Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

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Lakhmir Singh Biology Class 10 Solutions Page No:74

Question 24: Copy the figure given below which shows a plotting compass and a magnet. Label the N pole of the magnet and draw the field line on which the compass lies.

Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Solution : As the north pole of the magnetic needle is pointing in the opposite direction,so the nearer end of the magnet will be north pole.

Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Question 25: (a) The diagram shows a bar magnet surrounded by four plotting compasses. Copy the diagram and mark in it the direction of the compass needle for each of the cases B, C and D.
 (b) Which is the north pole, X or Y ?

Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Solution :

Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

(b) X, as it repels the north pole (tip) of magnetic needle.

Question 26: The three diagrams in the following figure show the lines of force (field lines) between the poles of two magnets. Identify the poles A, B, C, D, E and F.

Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRevSolutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRevSolutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Solution : A = N; B = N; C = S; D = S; E = N; F = S

Question 27: The figure given below shows the magnetic field between two magnets :
 (i) Copy the diagram and label the other poles of the magnets.
 (ii) Which is the weaker magnet ?

Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

Solution :
(a)

Solutions of Magnetic Effects of Electric Current (Page No- 74) - Physics By Lakhmir Singh, Class 10 Class 10 Notes | EduRev

(ii) Magnet 2 is weaker.

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