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प्रश्न
Electric field intensity in free space at a distance ‘r’ outside the charged conducting sphere of radius ‘R’ in terms of surface charge density ‘ a ’ is............................
(a)`sigma / in_0[R/r]^2`
(b)`in_0/sigma[R/r]^2`
(c)`R/r[sigma/in_0]^2`
(d)`R/sigma[r/in_0]^2`
उत्तर
(a) `sigma / in_0[R/r]^2`
Electric field intensity in the free space outside the charged conducting sphere in terms of surface charged density is given as
`E=sigma / in_0[R/r]^2`
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संबंधित प्रश्न
A solenoid of length 1.5 m and 4 cm in diameter possesses 10 turns per metre. A current of 5 A is flowing through it. The magnetic induction at a point inside the solenoid along the axis is ............................. .
(μ0 = 4π × 10-7 Wb/Am)
- π × 10-5 T
- 2π × 10-5 T
- 3π × 10-5 T
- 4π × 10-5 T
Explain different ways to induce current in a coil.
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(b) the number of turns of the coil
(c) the resistivity of the wire of the coil
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() What is the name of the effect being produced by the moving magnet?
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or
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Transformer______.
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Write the two names in the following diagram.
Right hand thumb rule.
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