Electrostatic Potential and Capacitance Test

Result

Electrostatic Potential and Capacitance Test - 84

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Weekly Quiz Competition

Question 1
1 / -0

The effective Capacitance in μF in between A and B will be.

A
$$\dfrac{28}{9}$$

B
4

C
5

D
18

Solution
Question 2
1 / -0

the plates of a parallel plate capacitor are separated by a distance d with air as the medium between the plates.in order to increase the capacitance by 66% a dielectric slab of dielectric constant 5 is introduced between the plates what is the thickness of the sielectric slab?

A
$$ \frac {d}{4} $$

B
$$ \frac {d}{2} $$

C
$$ \frac {5d}{8} $$

D
$$ d $$

Solution
Question 3
1 / -0

An electric field of $$200V{m^{ - 1}}$$ exists in the region between the plates of a parallel plate capacitor of plate separation $$5cm$$. The potential difference between the plates when a slab of dielectric constant $$4$$ and thickness $$1cm$$ is inserted between the plates is:

A
$$7.5V$$

B
$$8.5V$$

C
$$9.0V$$

D
$$10V$$

Solution
Question 4
1 / -0

Two capacitor $$ C_1 and C_2 $$ are connected in a circuit as shown in figure. the potential difference $$ (V_A-V_B) $$ is:

A
8V

B
-8V

C
12V

D
-12V

Solution
Question 5
1 / -0

The equivalent capacitance between P & Q in the figure is.

A
$$\dfrac{{A{\varepsilon _0}}}{{2d}}$$

B
$$\dfrac{{3A{\varepsilon _0}}}{{2d}}$$

C
$$\dfrac{{2A{\varepsilon _0}}}{{d}}$$

D
$$\dfrac{{5A{\varepsilon _0}}}{{3d}}$$

Solution
Question 6
1 / -0

In the given circuit $$C_{effective} = 0.5$$. Find the value of C.

A
$$10{\mu}F$$

B
$$1 {\mu} F$$

C
$${\frac {7} {10} }\mu F$$

D
$${\frac {7} {11} }\mu F$$

Solution
Question 7
1 / -0

Electric potential $$(\phi )$$ of a quadrupole varies with distance 'r' on its axis as :-

A
$$\phi :{ r }^{ -1 }$$

B
$$\phi :{ r }^{ -2 }$$

C
$$\phi :{ r }^{ -3 }$$

D
$$\phi :{ r }^{ { 3 }/{ 2 } }$$

Solution
Question 8
1 / -0

What is the equivalent capacitance between A and B in the circuit at steady state shown.

A
$$6\mu F$$

B
$$1.5\mu F$$

C
zero

D
$$2\mu F$$

Solution
Question 9
1 / -0

The correct graph between the gravitational potential $$(v_{g})$$ due to a hollow sphere and distance from centre will be

A

B

C

D

Solution
Question 10
1 / -0

Find equivalent capacitance across AB (all capacitances in $$\mu F$$)

A
$$\frac{20}{8} \mu F$$

B
$$19 \mu F$$

C
$$4.8 \mu F$$

D
None