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Electric Circuits

Electric Circuits
In RL series circuit R=2Ω and L=10mH and applied voltage is 10V DC. Then find the current in the network?

 5A
 0A
 1A
 10A

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Electric Circuits
Five cells are connected in series in a row and then four such rows are connected in parallel to Feed the current to a resistive load of 1.25Ω. Each cell has an emf of 1.5 V with internal resistance Of 0.2Ω. The current through the load will be

 5 A
 23.33 A
 3.33 A
 1 A

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Electric Circuits
Two battery having unequal emf

 cannot be connected in parallel.
 cannot be connected in series.
 both a and d
 can be connected in series only.

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Electric Circuits
A star connected load has three equal impedance each of (40 + j30) Ω If the line current is 5 A then value of line voltage is

 200 V.
 250 V.
 250 √3 V.
 250 / √3 V.

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Electric Circuits
A wire of 0.14 mm diameter and specific resistance 9.6 Ω - cm is 440 cm long. The resistance of the wire will be

 11.3 Ω.
 13.7 Ω.
 9.6 Ω.
 27.4 Ω.

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Electric Circuits
Which of the following has least resistivity?

 Aluminium.
 Lead.
 Copper.
 Mercury.

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