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A pendulum bob of mass 80mg and carrying...

A pendulum bob of mass 80mg and carrying a charge of `2xx 10^(-8)C` is at rest in a uniform, horizontal electric field of 20k `Vm^-1.` Find the tension in the thread.

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To solve the problem, we will follow these steps: ### Step 1: Identify the given values - Mass of the pendulum bob, \( m = 80 \, \text{mg} = 80 \times 10^{-3} \, \text{g} = 80 \times 10^{-6} \, \text{kg} \) - Charge on the bob, \( q = 2 \times 10^{-8} \, \text{C} \) - Electric field strength, \( E = 20 \, \text{kV/m} = 20 \times 10^{3} \, \text{V/m} \) ### Step 2: Calculate the force due to the electric field ...
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A pendulum bob of mass m = 80 mg, carrying a charge of q=2xx10^(-8)C , is at rest in a horizontal, uniform electric field of E = 20,000 V/m. The tension T in the thread of the pendulum and the angle alpha it makes with vertical, is (take g=9.8m//s^(2) )

Knowledge Check

  • A pendulum bob of mass 30.7 xx 10^(-6)kg and carrying a chargee 2 xx 10^(-8)C is at rest in a horizontal uniform electric field of 20000V//m . The tension in the thread of the pendulum is (g = 9.8 m//s^(2))

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    C
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    D
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    A
    `tan^(-1)(2.0)`
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    `(qE)/(sintheta)`
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