Electric Circuits
Kirchhoff’s voltage law is used for

 finding equivalent resistance.
 representing a current source.
 nodal analysis.
 loop analysis.

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Electric Circuits
A battery of E Volts is supplying a steady current to a series circuit of total resistance RΩ and inductance L Henry. A part R1 of the total resistance is suddenly short circuited. Find the expression for current flowing through the battery subsequent to the operation.

 i = {E / R}[1-(R1 / R) *e - {(R - R1 )*t/L}
 i = {E / (R - R1)}[1-(R1 / R) *e- {(R - R1 )t/L}
None of these
 i = {E / R1 - R)}(1- e - (R1 - R) t / L)

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Electric Circuits
A certain network consists of large number of ideal linear resistances, one of which is designated as R and two constant ideal source. The power consumed by R is P1 when only the first source is active and P2 when only second source is active. In both sources are active simultaneously then the power consumed by R is

 (√P1 ± √P2)2.
 √P1 ± √P2.
 (P1 ± P2 )2.
 P1 ± P2 .

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