• (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}

### ELECTRIC DIPOLE NOTES: ELECTRIC DIPOLE , DIPOLE LENGTH, ELECTRIC FIELD DUE TO ELECTRIC DIPOLE

Electric Dipole: It is a  system of equal and opposite charges separated by some  fixed distance. DIPOLE LENGTH : the distance AB = 2a is ...