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Standard XII

Chemistry

Molecular Speeds - Vrms, Vavg, Vmps

A sample of m...

Question

A sample of mass 50 gm is suspended by a string, in an electric field of intensity $5 {N C}^{- 1}$ , acting vertically upward. If the tension in the string is 520 milli Newton, the charge on the sphere is ? $(g = 10 {m s}^{- 2})$

4 \times 10^{- 3} C

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- 4 \times 10^{- 3} C

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8 \times 10^{- 3} C

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- 8 \times 10^{- 3} C

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Solution

The correct option is B $- 4 \times 10^{- 3} C$

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Similar questions

Q. A sphere of mass

50 g

is suspended by a string in an electric field of intensity

5 {NC}^{- 1}

acting vertically upward. If the charge on the sphere is

4 \times 10^{- 3} C

then the tension in the string is

(g = 10 {ms}^{- 2})

Q. A 0.50 gm ball carries of magnitude

10 μ C

. It is suspended by a string in a downward electric field of intensity 300 N/C If the charge on the ball is positive, then the tension in the string is (g = 10

m s^{- 2}

)

Q. A 0.50 gm ball carries of magnitude

10 μ C

. It is suspended by a string in a downward electric field of intensity 300 N/C If the charge on the ball is positive, then the tension in the string is (g = 10

m s^{- 2}

)

A small ball having charge q is suspended from a weightless, inextensible string. It is placed in a region of uniform electric field $E = 3 \times 10^{4} N m^{- 1}$ as shown in figure. In equilibrium, the string is making an angle of $30^{0}$ with the vertical. If the mass of the ball is $3 \sqrt{3}$ gm, the charge on it is : $(g = 10 m s^{- 2})$

Q. A simple pendulum of length 25 cm and amplitude

8^{o}

oscillates in a vertical plane. At t = 0, the bob is at its right extreme. At what time, the string makes an angle of

4^{o}

with vertical? (Take

g = 10 m / s^{2}

and

π^{2} = 10

)

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A sample of mass 50 gm is suspended by a string, in an electric field of intensity 5NC−1, acting vertically upward. If the tension in the string is 520 milli Newton, the charge on the sphere is ? (g=10ms−2)

The correct option is B −4×10−3C

A sample of mass 50 gm is suspended by a string, in an electric field of intensity $5 {N C}^{- 1}$ , acting vertically upward. If the tension in the string is 520 milli Newton, the charge on the sphere is ? $(g = 10 {m s}^{- 2})$

The correct option is B $- 4 \times 10^{- 3} C$