Kirchhoff’s Laws and their Applications NEET Questions

Physics - Current Electricity

Kirchhoff’s Laws and their Applications MCQ Questions


1.
Kirchhoff's first law (junction rule) is based on the law of conservation of:
A.
Momentum
B.
Mass
C.
Charge
D.
Energy
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ANSWER :
C. Charge
2.
Kirchhoff's second law (loop rule) is based on the law of conservation of:
A.
Current
B.
Energy
C.
Momentum
D.
Charge
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ANSWER :
B. Energy
3.
Kirchhoff's junction rule states that:
A.
Sum of currents entering a junction equals sum of currents leaving
B.
Sum of charges in a circuit is zero
C.
Sum of resistances in series equals total resistance
D.
Sum of EMFs in a loop equals sum of IR drops
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ANSWER :
A. Sum of currents entering a junction equals sum of currents leaving
4.
Kirchhoff's loop rule states that the algebraic sum of:
A.
Resistances in a loop is zero
B.
EMFs in a circuit is zero
C.
Currents in a loop is zero
D.
Changes in potential around any closed loop is zero
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ANSWER :
D. Changes in potential around any closed loop is zero
5.
Three currents I₁, I₂ and I₃ enter a junction. The current leaving the junction is:
A.
I₁ − I₂ − I₃
B.
I₁ + I₂ + I₃
C.
I₁ + I₂ − I₃
D.
(I₁ + I₂ + I₃)/3
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ANSWER :
B. I₁ + I₂ + I₃
6.
At a junction, currents 5 A and 3 A enter and currents 2 A and I leave. The value of I is:
A.
6 A
B.
4 A
C.
8 A
D.
10 A
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ANSWER :
A. 6 A