11. Kirchhoff’s voltage law is based on the principle of conservation of _________
A. energy
B. momentum
C. mass
D. charge
Answer: A
KVL is based on the law of conservation of energy. Kirchhoff’s 2nd law states that the sum of the potential drop across all the components in a loop must be zero. Thus Kirchhoff’s 2nd law is based on the conservation of energy.
12. In a circuit with more number of loops, which law can be best suited for the analysis?
A. KCL
B. Ohm’s law
C. KVL
D. None of the mentioned
Answer: C
Kirchhoff’s voltage law is based on the principle of conservation of energy. This requires that the total work done in taking a unit positive charge around a closed path and ending up at the original point is zero. KVL can be best suited for circuits with more number of loops.
13. Mathematically, Kirchhoff’s Voltage law can be ________
A. ∑_(k=0)n(V) = 0
B. V2∑_(k=0)n(V) = 0
C. V∑_(k=0)n(V) = 0
D. None of the mentioned
Answer: A
According to KVL, the sum of all voltages of branches in a closed loop is zero.
Kirchhoff’s voltage law is based on the principle of conservation of energy. This requires that the total work done in taking a unit positive charge around a closed path and ending up at the original point is zero.
14. Find the value of v if v1 = 20V and the value of the current source is 6A.
A. 10V
B. 12V
C. 14V
D. 16V
Answer: B. 12 V
The current through the 10 ohm resistor = v1/10 = 2A.
16. Calculate the current A by using Kirchhoff’s current law
A. 5A
B. 10A
C. 15A
D. 20A
Answer: C
KCl states that the total current leaving the junction is equal to the current entering it. In this case, the current entering the junction is 5A+10A = 15A.
17. In the figure shown, the current 𝑖 (in ampere) is __________