### Chapter 20 - Electromagnetism - 3

 1. Left hand rule, to determine the direction of force on the conductor was given by the scientist.a) Faraday b) Newtonc) Pascald) Fleming
 2. The number of magnetic lines of force passing through a certain surface is known as thea) Magnetic flux through that surface b) Electric flux through that surfacec) Self induction of that surfaced) Mutual induction of that surface
 3. A transformer has 100 turns in its primary coil and 500 in the secondary. If 6 volts DC is applied across its primary, the voltage induced across its secondary would bea) 0 volts b) 30 voltsc) 45 voltsd) 60 volts
 4. Match the column...............................conductora) coil b) thumbc) north and southd) current
 5. Match the column...............................number of turnsa) coil b) thumbc) north and southd) current
 6. Match the column...............................lines of forcea) current b) compassc) coild) thumb
 7. Match the column...............................polarity of a magneta) coil b) thumbc) north and southd) current
 8. Match the column...............................direction of forcea) coil b) thumbc) north and southd) compass
 9. Match the column...............................two equal but opposite forcesa) battery b) deflection of needlec) 90 degree angled) couple
 10. Match the column...............................supply of current a) battery b) deflection of needle c) 90 degree angle d) couple
 11. Match the column...............................generation of emfa) battery b) deflection of needlec) 90 degree angled) couple
 12. Match the column...............................value of the induced emfa) deflection of needle b) 90 degree anglec) coupled) rate of change of flux
 13. Match the column...............................righta) battery b) deflection of needlec) 90 degree angled) couple
 14. Match the column...............................perpendicular to planea) carbon brushes b) outward of planec) directionof the currentd) direction of the force
 15. Match the column...............................curling the finguresa) carbon brushes b) outward of planec) direction of the currentd) direction of the force
 16. Match the column...............................fleming left hand rulea) carbon brushes b) outward of planec) direction of the currentd) direction of the force
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