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4

Two capacitors C1 =5.2μF ± 0 .1μFandc3= 12 .2μFare joined (i)I n series (ii) In paraUel Find the net capacitance in these two cases.

A. 2.8%, 1.23%

B. 3.6%, 1.31%

C. 3.4%, 1.3%

D. 3.9%, 1.15%

Correct Answer :

D. 3.9%, 1.15%


In parallel c = c1 + c2 and
cc×100 = c1+c2c1+c2×100 = 0.2x10017.4
In series c =c1c2c1+c2 and
cc×100 = c1c1+c2c2+c1+c2c1+c2100
= 0.15.2+0.112.2×100+1.15 = 3.9%

Related Questions

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4

The fastest commercial airline service is 1450 mi/b. Find the speed in kmh-1 and ms-1

A. 1938 kmh-1, 618.3ms-1

B. 2030 kmh-1, 623.1 ms-1

C. 2334 kmh-1, 647.5 ms-1

D. None

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4

Out of the following pair, which one does not have the
same dimensions?

A. angular momentum and Planck's constant

B. impulse and momentum

C. moment of inertia and moment of force

D. work and torque.

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4

Parsec is the unit of

A. time

B. distance

C. frequency

D. angular acceleration

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4

While printing a book a printer made certain mistakes in the following relation. Find the correct relation.

A. y = A sin ωθ

B. y = A sin (ωx+θ)

C. y = A sin (ωt+θ)

D. y = Ax sin ωt+θ

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4

The velocity of surface waves depends upon surface tension, coefficient of viscosity and density. The relation is

A. s2ρη

B. sη

C. ηρs2

D. ρη

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4

A chocolate cookie is a circular disk of diameter 8.50 ± 0.02 cm and thickness 0.050 ± 0.005 cm. The average volume in cm is 

A. 2.83 ± 0.3

B. 2.38 ± 0.27

C. 11.35 ± 1.2

D. 9.31 ± 1.12

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4

If M is mass of the earth and R its radius, the ratio of the gravitational acceleration and the gravitational constant is

A. R2M 

B. MR2

C. MR2

D. MR

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4

Which of the following does not have the same
dimension?

A. Electric flux, electric field, electric dipole moment

B. pressure, stress, Young's modulus

C. Electromotive force, potential difference, electric
voltage

D. Heat, potential energy, work done.

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4

The ratio of the dimension of Planck's constant and
that of moment of inertia is the dimension of

A. time

B. frequency

C. angular momentum

D. velocity

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4

Which of the following pair has different dimensions?

A. Electric Pressure, energy density

B. lntensity,0E02c

C. Reynold's number and time constant

D. work, Torque

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4

A force F is given by F =at+ bt2 where t is time, what are the dimension of a and b.

A. MLT1, MLT0,

B. MLT3, ML2T4,

C. MLT-4, MLT-4,

D. ML-3T, MLT-4,

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4

Find the dimensions of Β2μ0

A. ML2T2

B. ML-1T-1

C. ML-2T2

D. ML-1T-2

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4

Two capacitors C1 =5.2μF ± 0 .1μFandc3= 12 .2μFare joined (i)I n series (ii) In paraUel Find the net capacitance in these two cases.

A. 2.8%, 1.23%

B. 3.6%, 1.31%

C. 3.4%, 1.3%

D. 3.9%, 1.15%

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4

A. Specific gravity of a fluid is a dimensionless quantity
R . It is the ratio of density of fluid to density of water

A. both A and R are correct and R is the correct
explanation of A.

B. both A and R are correct but R is not the correct
explanation of A

C. A is correct but R is false

D. both A and R are false

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4

Which of the following is not a unit of Young's modulus?

A. N m-1

B. N m-2

C. dyne cm-2

D. mega pascal