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Test: Kirchhoff’s Current & Voltage Law


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20 Questions MCQ Test Basic Electrical Technology | Test: Kirchhoff’s Current & Voltage Law

Test: Kirchhoff’s Current & Voltage Law for Electrical Engineering (EE) 2022 is part of Basic Electrical Technology preparation. The Test: Kirchhoff’s Current & Voltage Law questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Kirchhoff’s Current & Voltage Law MCQs are made for Electrical Engineering (EE) 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Kirchhoff’s Current & Voltage Law below.
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Test: Kirchhoff’s Current & Voltage Law - Question 1

Find the value of v if v1=20V. Find the value of v if v1=20V and value of current source is 6A.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 1

The current through the 10 ohm resistor=v1/10=2A.Applying KCL at node 1: i5=i10+i2. i2=6-2=4A.
Thus the drop in the 2 ohm resistor= 4×2=8V.
v1=20V; hence v2=20-v across 2 ohm resistor=20-8=12V
v2=v since they are connected in parallel.
v=12V.

Test: Kirchhoff’s Current & Voltage Law - Question 2

Calculate the current A.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 2

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.

Test: Kirchhoff’s Current & Voltage Law - Question 3

 Calculate the current across the 20 ohm resistor.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 3

Assume lower terminal of 20 ohm at 0V and upper terminal at V volt and applying KCL, we get V/10 +V/20 =1. V=20/3V So current through 20 ohm = V/20 = (20/3)/20 =1/3=0.33V.

Test: Kirchhoff’s Current & Voltage Law - Question 4

Calculate the value of I3, if I1= 2A and I2=3A.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 4

 According to KCl, I1+I2+I3=0. Hence I3=-(I1+I2)=-5A.

Test: Kirchhoff’s Current & Voltage Law - Question 5

Find the value of i2, i4 and i5 if i1=3A, i3=1A and i6=1A.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 5

 At junction a: i1-i3-i2=0. i2=2A.
At junction b: i4+i2-i6=0. i4=-1A.
At junction c: i3-i5+i4=0. i5=2A.

Test: Kirchhoff’s Current & Voltage Law - Question 6

What is the value of current if a 50C charge flows in a conductor over a period of 5 seconds?

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 6

Current=Charge/Time. Here charge = 50c and time = 5seconds, so current = 50/5 = 10A.

Test: Kirchhoff’s Current & Voltage Law - Question 7

KCL deals with the conservation of?

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 7

KCL states that the amount of charge entering a junction is equal to the amount of charge leaving it, hence it is the conservation of charge.

Test: Kirchhoff’s Current & Voltage Law - Question 8

KCL is applied at _________

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 8

KCL states that the amount of charge leaving a node is equal to the amount of charge entering it, hence it is applied at nodes.

Test: Kirchhoff’s Current & Voltage Law - Question 9

KCL can be applied for __________

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 9

KCL is applied for different nodes of a network whether it is planar or non-planar.

Test: Kirchhoff’s Current & Voltage Law - Question 10

 What is the value of the current I?

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 10

 At the junction, I-2+3-4-5=0. Hence I=8A.

Test: Kirchhoff’s Current & Voltage Law - Question 11

Calculate the value of V1 and V2.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 11

Using KVL, 12-V1-8=0. V1= 4V.
8-V2-2=0. V2=6V.

Test: Kirchhoff’s Current & Voltage Law - Question 12

 KCL deals with the conservation of?

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 12

KCL states that the amount of charge entering a junction is equal to the amount of charge leaving it, hence it is the conservation of charge.

Test: Kirchhoff’s Current & Voltage Law - Question 13

Calculate the voltage across the 10 ohm resistor.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 13

Using voltage divider rule, V=10*12/30=4V.

Test: Kirchhoff’s Current & Voltage Law - Question 14

Find the value of the currents I1 and I2.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 14

Using KVL, the matrix to find the loop currents are:
MATRIX 10 -100*i1 + 100*i2= 0
MATRIX  10-200*i2 + 100i1 = 0
I1= 0.3, I2=0.2

Test: Kirchhoff’s Current & Voltage Law - Question 15

The sum of the voltages over any closed loop is equal to __________

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 15

According to KVL, the sum of the voltage over any closed loop is equal to 0.

Test: Kirchhoff’s Current & Voltage Law - Question 16

What is the basic law that has to be followed in order to analyze ant circuit?

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 16

Kirchhoff’s laws, namely Kirchhoff’s Current Law and Kirchhoff’s Voltage law are the basic laws in order to analyze a circuit.

Test: Kirchhoff’s Current & Voltage Law - Question 17

 Every____________ is a ____________ but every __________ is not a __________

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 17

According to Kirchhoff’s Voltage Law, Every mesh is a loop but every loop is not a mesh.

Test: Kirchhoff’s Current & Voltage Law - Question 18

Solve for I.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 18

Veq = 10 + 5 -20 = -5u
Req = 5 + 2 + 3 = 10Ω
I = V/R = -5/10 = -0.5A.

Test: Kirchhoff’s Current & Voltage Law - Question 19

Calculate VAB.

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 19

For branch A: VAC=15*20/(25+15)=7.5V
For branch B: VBC= 10*20/(10+40)=4V
Applying KVL to loop ABC:
VAB+VBC+VCA=0
VAB=3.5V.

Test: Kirchhoff’s Current & Voltage Law - Question 20

 KVL is applied in ____________

Detailed Solution for Test: Kirchhoff’s Current & Voltage Law - Question 20

Mesh analysis helps us to utilize the different voltages in the circuit as well as the IR products in the circuit which is nothing but KVL.

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