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Electric Circuits

Electric Circuits
Which material has extremely large resistance?

None of these
 Semiconductor
 Insulator
 Conductor

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Electric Circuits
Highest current density is usually recommended for

  chromium plating.
  cadmium plating.
  bronze plating.
  tin plating.

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Electric Circuits
In RL series circuit R=2Ω and L=2mH. What is the value of time constant?

 2msec
 1msec
 100sec
 4msec

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Electric Circuits
The laplace transform of the fuction f(t) = t is

 s.
 1/s.
 1/s2.
 s2.

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Electric Circuits
The mass of the atom is determined by

 proton.
 neutron and proton.
 electrons.
 electron and proton.

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Electric Circuits
What will be the capacitance when distance between the 2 plates of a condenser of capacitance 8 micro farad is reduced from 10 mm to 4 mm?

 3.2 microfarad.
 8 microfarad.
 1 microfarad.
 20 microfarad.

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