10th science Chapter 13 objective English medium

For chapter 12 click here 👇👇

Chapter 12 electricity

By vikas lodhi

VENUS BHATNAGAR SCIENCE INSTITUTE INDORE 

                          CHAPTER - 13

        ( MAGNETIC EFFECT OF CURRENT )

Question 1. Two magnet when come closer:
(a) Attract each other
(b) Repei each other
(c) Sometimes attract and sometimes repel
(d) No reaction

Answer:
(c) Sometimes attract and sometimes repel

Question 2. Permanent magnet can be made by:
(a) Gold
(b) Carbon
(c) Alnico
(d) Wood

Answer:
(c) Alnico

Question 3. When we draw magnetic field lines of any magnet it:
(a) Begin from N pole and end at S pole
(b) Begin from S pole and end at N pole
(c) Form circles around a magnet
(d) Form box around a magnet

Answer:
(a) Begin from N pole and end at S pole

Question 4. Strongest magnetic pole around a magnet is
(a) Near North pole
(b) Near south pole
(c) In center of magnet
(d) At both poles

Answer:
(d) At both poles

Question 5. Electro magnetism was discovered by
(a) Newton
(b) Oersted
(c) Ohm
(d) Joule

Answer:
(b) Oersted

Question 6. Electro magnets are used in
(a) AC
(b) Fridge
(c) Radio
(d) All of these

Answer:
(d) All of these

Question 7. Magnetic field are lines forming
(a) Straight lines
(b) Closed curves
(c) Dotted lines
(d) Dotted triangles

Answer:
(b) Closed curves

Question 8. Magnetic field of a straight conductor form:
(a) Straight lines
(b) Concentric lines
(c) Points
(d) None of above

Answer:
(b) Concentric lines

Question 9. According to right hand thumb rule, current is generated in a system:
(a) Parallel to magnetic field
(b) Perpendicular to magnetic field
(c) Just above the magnetic field
(d) All of these.

Answer:
(b) Perpendicular to magnetic field

Question 10. If a circular loop conductor has 5 turn, magnetic field produced by it will be to than single loop conductor.
(a) 5 times bigger
(b) 5 times lesser
(c) Similar
(d) 10 times lesser

Answer:
(a) 5 times bigger

Question 11. Magnetic field generated due to a passing current in a solenoid forms pattern:
(a) Similar to circular loops
(b) Similar to straight conductor
(c) Similar to Bar magnet
(d) Which is unique

Answer:
(c) Similar to Bar magnet

Question 12. According to Fleming’s left hand rule
(a) Field is perpendicular to current
(b) Field is perpendicular to force generated
(c) Current is perpendicular to force generated .
(d) All of these

Answer:
(d) All of these

For chapter 14 click here 👇👇

Chapter 14 sources of energy

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