coulomb law

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Electric charges under action of electric forces is called

Electric charges under action of electric forces is called
  • A. electrostatic
  • B. electric flux
  • C. electric field
  • D. electric field lines
  • Correct Answer: Option A

Value of constant K in Coulomb’s law has value of

Value of constant K in Coulomb’s law has value of
  • A. 9 × 10³
  • B. None
  • C. None
  • D. None
  • Correct Answer: Option D

Formula that describes statement of Coulomb’s law is

Formula that describes statement of Coulomb’s law is
  • A. None
  • B. None
  • C. f = kQ/r²
  • D. None
  • Correct Answer: Option A

Two positive charges Q1 = 16 C and Q2 = 4 C, separated by a diameter of 3 m will produce force of

Two positive charges Q1 = 16 C and Q2 = 4 C, separated by a diameter of 3 m will produce force of
  • A. 40 N
  • B. 41.1 N
  • C. 42.3 N
  • D. 42.7 N
  • Correct Answer: Option D

Law stating that “force is directly proportional to product of charges and inversely proportional to square of separation between them” is called

Law stating that “force is directly proportional to product of charges and inversely proportional to square of separation between them” is called
  • A. newton's law
  • B. coulombs law
  • C. gauss's law
  • D. &Ohm;'s law
  • Correct Answer: Option B

Electrical force exerted by two point charges on each other is inversely proportional to

Electrical force exerted by two point charges on each other is inversely proportional to
  • A. sum of their charges
  • B. product of their charges
  • C. distance between them
  • D. square of distance between them
  • Correct Answer: Option D

If we have a positive and a negative charge, then force between them is

If we have a positive and a negative charge, then force between them is
  • A. positive
  • B. negative
  • C. zero
  • D. infinite
  • Correct Answer: Option B