Kirchhoff’s Laws and their Applications NEET Questions

Physics - Current Electricity

Kirchhoff’s Laws and their Applications MCQ Questions


13.
The balance condition of a Wheatstone bridge with arms R₁, R₂, R₃, R₄ (in order around the bridge) is:
A.
R₁ + R₂ = R₃ + R₄
B.
R₁R₂ = R₃R₄
C.
R₁R₃ = R₂R₄
D.
R₁/R₂ = R₃/R₄
😑 View Answer Rough Work Error
ANSWER :
D. R₁/R₂ = R₃/R₄
14.
The Wheatstone bridge principle is used to:
A.
Determine the value of an unknown resistance accurately
B.
Measure EMF of a cell
C.
Measure current
D.
Generate EMF
😑 View Answer Rough Work Error
ANSWER :
A. Determine the value of an unknown resistance accurately
15.
If the current entering one terminal of a junction is 2 A and 3 A, then the current leaving from the third wire is:
A.
6 A
B.
0 A
C.
1 A
D.
5 A
😑 View Answer Rough Work Error
ANSWER :
D. 5 A
16.
In Kirchhoff's loop rule, EMF of a battery is taken positive if the loop is traversed from:
A.
+ to − terminal
B.
− to + terminal
C.
Depends on current direction
D.
Either way
😑 View Answer Rough Work Error
ANSWER :
B. − to + terminal
17.
Two resistors of 4 Ω and 6 Ω are connected in series with a battery of EMF 10 V (no internal resistance). Using Kirchhoff's laws, the current is:
A.
1 A
B.
2 A
C.
0.5 A
D.
10 A
😑 View Answer Rough Work Error
ANSWER :
A. 1 A
18.
The Wheatstone bridge has four arms with resistances P = 2 Ω, Q = 4 Ω, R = 3 Ω. For balance, the fourth arm S must be:
A.
1.5 Ω
B.
12 Ω
C.
8 Ω
D.
6 Ω
😑 View Answer Rough Work Error
ANSWER :
D. 6 Ω