Electrical Resistivity and Conductivity (Series and Parallel Combinations of Resistors; Temperature Dependence of Resistance) NEET Questions

Physics - Current Electricity

Electrical Resistivity and Conductivity (Series and Parallel Combinations of Resistors; Temperature Dependence of Resistance) MCQ Questions


7.
When n equal resistors each R are connected in parallel, the equivalent resistance is:
A.
n²R
B.
R/n
C.
nR
D.
R/n²
😑 View Answer Rough Work Error
ANSWER :
B. R/n
8.
Two resistors of 6 Ω and 3 Ω are connected in parallel. The equivalent resistance is:
A.
18 Ω
B.
0.5 Ω
C.
2 Ω
D.
9 Ω
😑 View Answer Rough Work Error
ANSWER :
C. 2 Ω
9.
Two resistors of 6 Ω and 3 Ω are connected in series. The equivalent resistance is:
A.
2 Ω
B.
9 Ω
C.
18 Ω
D.
0.5 Ω
😑 View Answer Rough Work Error
ANSWER :
B. 9 Ω
10.
Three resistors of 4 Ω, 6 Ω and 12 Ω are connected in parallel. The equivalent resistance is:
A.
2 Ω
B.
1 Ω
C.
3 Ω
D.
22 Ω
😑 View Answer Rough Work Error
ANSWER :
A. 2 Ω
11.
The dimensions of resistivity are:
A.
[ML²T⁻³A⁻¹]
B.
[ML³T⁻³A⁻²]
C.
[MLT⁻³A⁻¹]
D.
[ML²T⁻³A⁻²]
😑 View Answer Rough Work Error
ANSWER :
B. [ML³T⁻³A⁻²]
12.
The dimensions of conductivity are:
A.
[ML²T⁻³A⁻¹]
B.
[ML³T⁻³A⁻²]
C.
[M⁻¹L³T⁻⁴A⁻¹]
D.
[M⁻¹L⁻³T³A²]
😑 View Answer Rough Work Error
ANSWER :
D. [M⁻¹L⁻³T³A²]