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                                    (a) What is a solenoid ? Draw the pattern of magnetic field lines of a solenoid through which a steady current flows. (b) Mention two ways to increase the strength of the magnetic field of a solenoid. | 
                            
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Answer» SOLUTION :(a) See Short Answer QUESTION Number 12.  (b) The strength of magnetic field of a SOLENOID can be increased by (1) increasing the current flowing through solenoid coil, and (ii) increasing the number of TURNS per unit length of the solenoid coil.  | 
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