Magnetic Effects of Current: Moving Charges and Magnetism

 

Q1 Who discovered  Magnetic effect of current ?

• (a) Oersted 
• (b) Faraday
• (c) Bohr 
• (d) Ampere

• (a) Oersted 

Q2 Which instrument is used to detect presence of magnetic field

• (a) Ammeter 
• (b) Compass
• (c) Galvanometer 
• (d) Voltmeter

• (b) Compass

Q3  A positive charge is moving perpendicular in a magnetic field which is directed towards north. The particle will be deflected towards

• (a) East 
• (b) north
• (c) South 
• (d) West

• (d) Apply Right hand Rule

Q4 A charged particle  is moving with a uniform speed then it will produce 

• (a) Only electric field 
• (b) Only magnetic field
• (c) Both electric and magnetic field
• (d) Electromagnetic waves with electric and magnetic field

• (c) Both electric and magnetic field

Q5 Force on a charged particle which is at rest in strong magnetic field will be 

• (a) Maximum
• (b) Zero
• (c) Insufficient data  
• (d) None

• b) Zero

Q6 1 Tesla = ...Gauss

• a) `10^{5}` Gauss
• b) `10^{4}` Gauss
• c) `10^{3}` Gauss
• d) `10^{-4}` Gauss

• b) `10^{4}` Gauss

Q7 Tesla is a unit of

• (a) Electric flux 
• (b) Magnetic flux
• (c) Electric field 
• (d) Magnetic field

• (d) Magnetic field

Q8 How does the magnetic field due to Infinitely long current carrying conductor at a distance r from conductor depends 

• (a) B∝r
• (b) B∝`\frac{1}{r^{}}`
• (c) B∝`\frac{1}{r^{2}}`
• (d) None of these

• (b) B∝1/r

Q9. The Dimensions of magnetic field are

• a) `ML^{1}T^{-2}A^{-1}`
• b) `ML^{0}T^{-2}A^{-1}`
• c) `ML^{0}T^{-1}A^{-1}`
• d) `ML^{0}T^{-2}A^{-2}`

• b) `ML^{0}T^{-2}A^{-1}`

Q10 1 Gauss= .. Tesla

• (a) `10^{5}`
• (b) `10^{4}`
• (c) `10^{3}`
• (d) `10^{-4}`

• (d) `10^{-4}`