Month: April 2022

Categories
Physics

For the computation of electric flux, surface area should be

  • Flat
  • Curved
  • Inclined
  • spherical
Categories
Physics

The unit of energy density of electric field is

  • J/C
  • J/V
  • J/m3
  • J/F3
Categories
Physics

Two point charges +2C and +6C repel each other if a charge 0f -2C is given to each of them then electrostatic force between them is

  • 0N
  • 8×109 N (attractive)
  • 108x109N (repulsive)
  • 12x109N (attractive and repulsive)
Categories
Physics

The minimum charge on an object can not be less than

  • 1C
  • 1.6×10-19C
  • 1.6x1019C
  • none
Categories
Physics

The electric field created by positive charge is

  • Radially outward
  • Radially inward
  • circular
  • zero
Categories
Physics

Presence of dielectric always

  • Increase the electrostatic force
  • decrease the electrostatic force
  • double the electrostatic force
  • Does not affect the electrostatic force
Categories
Physics

Energy density in case of capacitor is always proportional to

  • C
  • E2
  • V2
  • Є0
Categories
Physics

One electron volt is equal to

  • 1.6×10-19J
  • 1.6x1019J
  • 6.25×10-18J
  • 6.25x1018J
Categories
Physics

The term RC has the same unit as that of (RC= )

  • 1/ t2
  • t2
  • 1/t
  • t
Categories
Physics

Xerography means

  • average
  • Breaking down
  • Liquid writing
  • Dry writing