Kirchhoff's Laws

Author:Kumar Mittal
12th ICSE
IMPORTANT

Important Questions on Kirchhoff's Laws

MEDIUM
IMPORTANT

Calculate the currents I1,I2 and I3 in the given The cells have negligible internal resistances.

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HARD
IMPORTANT

Two cells of emf's 6 V and 12 V and internal resistances 1 Ω and 2 Ω respectively are connected in parallel to send current in the same direction through an external resistance of 15 Ω. Draw the circuit diagram. Using Kirchoff's laws, calculate the current through each branch of the circuit and p.d. across the 15 Ω resistance.

HARD
IMPORTANT

Two cells E1 and E2 of emf's 4 V and 2 V respectively, each having an internal resistance of 2Ω send current in an external resistance of 8Ω. Find the magnitudes and the directions of currents I1 and I2 flowing through the cells E1 and E2.

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HARD
IMPORTANT

In the given circuit E1 and E2 are two cells of emfs 2 V and 3 V respectively, having negligible internal resistances. Applying Kirchhoff’s laws of electrical networks, find the values of I1 and I2.

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HARD
IMPORTANT

In the circuit shown in figure, E1=17 V, E2=21 V, R1=2Ω, R2=3Ω and R3=5Ω. Using Kirchhoff's laws, find currents flowing through resistors R1, R2 and R3  (internal resistance of each of the batteries is negligible)

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MEDIUM
IMPORTANT

A part of an electric circuit is shown in the figure below :

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Using Kirchhoff's 2nd law, find the current I flowing through the 4Ω resistor.

MEDIUM
IMPORTANT

The figure show parts of electrical circuits. Compute I in each case.

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EASY
IMPORTANT

The figure show parts of electrical circuits. Compute I in each case.

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EASY
IMPORTANT

On which conservation principle is Kirchhoff's second law of electrical networks based?

EASY
IMPORTANT

Which conservation principle is involved in Kirchhoff s first law of electric circuits?

EASY
IMPORTANT

Name the two conservation laws implied in Kirchhoff s law for electric circuits.

HARD
IMPORTANT

State Kirchhoffs laws for electric circuits and write the corresponding association of conservation of the quantities. Draw diagram in support of laws.

HARD
IMPORTANT

State and explain Kirchhoff's laws for electric circuits. What are the conservation laws implied in each law? State the sign convention for current and emf. Use the given circuit for your explanation.
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MEDIUM
IMPORTANT

State Kirchhoff's second law (loop rule) as a mathematical equation, mentioning what the symbols used stand for.4)

EASY
IMPORTANT

State Kirchhoffs first law (Junction rule) and prove that it is simply a statement of the conservation of charge.