1 |
The equivalent resistance in parallel combination is: |
R<sub>c</sub>=R<sub>1</sub>+R<sub>2</sub>+R<sub>3</sub> +.................+R<sub>n</sub>
R<sub>c</sub>=1/R<sub>1</sub>+1/R<sub>2</sub>+1/R<sub>3</sub>+.................+1/R<sub>n</sub>
a and b
None of these
|
2 |
Resistance of conductor is directly proportional to: |
Length
Pressure
Area
All of these
|
3 |
The unit of resistance is: |
Ω-m
Ω
V
C
|
4 |
The unit of (ρ) in formula R=ρ.L/a is______________. |
Ω
Ω-m
Ω-m<sup>2</sup>
Ω-m<sup>-2</sup>
|
5 |
What type of graph is in between V and I? |
Curved
Parabola
Straight line
None of these
|
6 |
According to Ohm's law V =________ |
I<sup>2</sup>R
IR<sup>2</sup>
IR
I/R
|
7 |
The unit of potential difference is: |
Volt
Coulomb
Ampere
Joule
|
8 |
The resistance of conductors is due to: |
Protons
Fixed atoms
Molecules
Neutrons
|
9 |
Battery converts chemical energy into which energy: |
Mechanical
Electrical
Thermal
None of these
|
10 |
The rate of flow of charge through any cross-sectional area is called: |
potential difference
Energy
Coulomb
Electric current
|
11 |
The ampere is a unit of: |
Energy
Potential differrence
Electric potential
Electric current
|
12 |
The combined resistance of two identical resistors, connected in series is 8Ω. Their combined resistance in a parallel arrangement will be: |
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4Ω
8Ω
12Ω
|