Electrostatic Potential and Capacitance Test

Result

Electrostatic Potential and Capacitance Test - 81

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Weekly Quiz Competition

Question 1
1 / -0

The total capacitance between points A and B in the arranged shown below is

A
$$28\mu F$$

B
$$\dfrac{34}{7}\mu F$$

C
$$23\mu F$$

D
$$\dfrac{34}{3}\mu F$$

Solution
Question 2
1 / -0

Four metallic plates each with surface area '$$A$$' and inter plate separation '$$d$$' are placed as shown. Alternative plates are connected to point $$A$$ and $$B$$. The equivalent capacitance of the system is

A
$$\dfrac{\in_0A}{d}$$

B
$$\dfrac{2\in_0A}{d}$$

C
$$\dfrac{3\in_0A}{d}$$

D
$$\dfrac{4\in_0A}{d}$$

Solution
Question 3
1 / -0

For section $$AB$$ of a circuit, $$C_1 = 1 \mu F,$$ $$C_2 = 2 \mu F,$$ $$E = 10 V,$$ and the potential difference $$V_A - V_B = -10 V$$. Charge on capacitor $$C_1$$ is

A
$$0 \: \mu C$$

B
$$20/3 \: \mu C$$

C
$$40/3 \: \mu C$$

D
none of these

Solution
Question 4
1 / -0

The equivalent capacitance between A and B is

A
$$\dfrac{C}{4}$$

B
$$\dfrac{C}{3}$$

C
$$\dfrac{3C}{4}$$

D
$$\dfrac{4C}{3}$$

Solution
Question 5
1 / -0

Five plates (same plate area for each) are placed as shown
in figure.Capacitance of each parallel plate capacitor is C. Then find $${C_{AB}}$$.

A
5C/3

B
3C/5

C
4C

D
C/4

Solution
Question 6
1 / -0

A combination arrangement of the capacitors is shown in the figure $$C_1 = 3\mu F, C_2 = 6\mu F$$ and $$C_3 = 2\mu F$$ then eqivalent capactance between 'a' and 'b' is:

A
$$4\mu F$$

B
$$1\mu F$$

C
$$6\mu F$$

D
$$2\mu F$$

Solution
Question 7
1 / -0

In the circuit shown in figure, point C is connected to A to charge the capacitor $$4 \mu F$$ capacitor thereby changes by a factor:

A
3/4

B
1

C
1/3

D
2/3
Question 8
1 / -0

The equivalent capacitance in the figure shown between indicated points is -

A
$$5/4 \mu F$$

B
$$11/4 \mu F$$

C
$$3/4 \mu F$$

D
$$11 \mu F$$

Solution
Question 9
1 / -0

In a region of uniform field $$,$$ as an electron travels from $$A$$ to $$B,$$ it slows from $${u_A} = 6.1 \times {10^6}\,m/s$$ to $${u_B} = 4.5 \times {10^6}\,m/s.$$ What is its potential change $$\Delta V = {V_B} - {V_A}$$ in volts?

A
$$18$$

B
$$-18$$

C
$$+48$$

D
$$-48$$

Solution
Question 10
1 / -0

The charge on each capacitors shown in figure and the potential difference across them will be respectively.

A
$$240\mu C, 80\mu C, 160\mu C$$ and $$80\ V, 40\ V, 40\ V$$

B
$$300\mu C, 75\mu C, 150\mu C$$ and $$40\ V, 80\ V, 60\ V$$

C
$$220\mu C, 70\mu C, 140\mu C$$ and $$60\ V, 50\ V, 40\ V$$

D
None of these

Solution