HSC Science (General) 12th Board ExamMaharashtra State Board
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A Rectangular Coil of a Moving Coil Galvanometer Contains 100 Turns, Each Having Area 15 cm^2. It is Suspended in the Radial Magnetic Field 0.03 T. - HSC Science (General) 12th Board Exam - Physics

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Question

A rectangular coil of a moving coil galvanometer contains 100 turns, each having area
15 cm2. It is suspended in the radial magnetic field 0.03 T. The twist constant of suspension
fibre is 15 x 10-10 N-m/degree. Calculate the sensitivity of the moving coil galvanometer.

Solution

Given: `N = 100, A = 15 cm^2 = 15 xx 10^-4 m^2`,

`B = 0.03 (Wb)/m^2`,

`C = 15 xx 10^-10 "Nm"/"degree"`

To find: Sensitivity (Si)

Formulae: `S_i=(NAB)/c`

`S_i=(100xx15xx10^-4xx0.03)/(15xx10^-10)`

`S_i=3xx10^6 "div"/A`

The sensitivity of a moving coil galvanometer is `3 xx 10^6 "div"/A`.

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APPEARS IN

 2016-2017 (March) (with solutions)
Question 6.5 | 2.00 marks

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Solution A Rectangular Coil of a Moving Coil Galvanometer Contains 100 Turns, Each Having Area 15 cm^2. It is Suspended in the Radial Magnetic Field 0.03 T. Concept: Moving Coil Galvanometer.
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