State Kirchhoff’s rules. Apply these rules to the loops PRSP and PRQ

1.	State Kirchhoff’s rules. Apply these rules to the loops PRSP and PRQP to write the expressions for the currents I1, I2 and I3 in the given circuit.
Answer» From Kirchhoff’s I law I₃ = I₁ + I₂ …(i) Applying Kirchhoff’s II law to loop PRSP - 20I₃ -200I₂ + 5 = 0 => 40I₂ + 4I₃ = …(ii) Applying Kirchhoff’s II law to loop PRQP - 20I₃ - 60I₂ + 4 = 0 => 15I₁ + 5I₃ = 1

State Kirchhoff’s rules. Apply these rules to the loops PRSP and PRQP to write the expressions for the currents I1, I2 and I3 in the given circuit.

Answer»

From Kirchhoff’s I law I₃ = I₁ + I₂ …(i)

Applying Kirchhoff’s II law to loop PRSP

- 20I₃ -200I₂ + 5 = 0

=> 40I₂ + 4I₃ = …(ii)

Applying Kirchhoff’s II law to loop PRQP

- 20I₃ - 60I₂ + 4 = 0 => 15I₁ + 5I₃ = 1

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State Kirchhoff’s rules. Apply these rules to the loops PRSP and PRQP to write the expressions for the currents I1, I2 and I3 in the given circuit.

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