Study

Electricity

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  • In paint spraying which object is positively charged and which object is negatively charged?
    the object to be painted is positively charged and the paint is negatively charged
  • what is an insulator?
    a material which does not allow the charge to flow through them
  • how is the ammeter connected to a circuit?
    ammeter is connected in series with the load.
  • what is the formula/equation for current?
    I = Q/t
  • What kind of circuit is this?
    series circuit
  • what happens when two unlike charges are placed near each other?
    unlike charges attract each other
  • What is the unit of charges?
    Coulomb
  • what is a positively charged atom?
    it has less number of electron than proton
  • what happens to the other bulbs in a series circuit if one of the bulbs is broken?
    the other bulbs will not light up
  • If the ammeter reading in the figure is 2A, how much current flows through all three bulbs?
    current in bulb1 = current in bulb 2 - current in bulb 3 = 2A
  • what happens to the current in a series circuit if more cells is added to it while keeping the number of bulbs constant?
    the current in the circuit will increase
  • what is a conductor?
    a material which allows the charge to flow through them
  • what is a neutral atom?
    an atom that has equal number of proton and electron
  • What is the unit of current?
    Ampere
  • What device is used to measure electric current?
    ammeter
  • what happens when two like charges are placed near each other?
    the like charges repel each other
  • what is a parallel circuit?
    a parallel circuit is a circuit which have junctions where the electrical pathway divides or branches oout
  • which device is used to control electrical circuits?
    switch