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Electric Circuits

Electric Circuits
Four capacitors each of 40 µF are connected in parallel, the equivalent capacitance of the system will be

 40 µF
 5 µF
 160 µF
 10 µF

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Electric Circuits
A current in a circuit is given by, If the current flows through the 5 Ω resistor, find power dissipated at t = 0?

 10 Watts.
 40 Watts.
 15 Watts.
 20 Watts.

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Electric Circuits
Disadvantages of constant k type filter

  none of these.
  attenuation does not increase rapidly beyond cut off frequency.
  characteristic impedance unchanged in pass band.
  both A and B.

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Electric Circuits
Which of the following are the passive elements?

 None of these.
 Both
 Resistor
 Bulb

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Electric Circuits
Container of a lead acid battery

 celluloid.
 ceramics.
 molded hard rubber.
 any of above.

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Electric Circuits
The value of E within the field due to a point charge can be found with help of

 Coulombs law.
 Faradays law.
 Lenzs law.
 Kirchhoffs law.

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