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A galvanometer having a coil resistance ...

A galvanometer having a coil resistance of `60 Omega` shows full scale defection when a current of `1.0 A` passes thoguth it. It can vbe convered into an ammeter to read currents up to `5.0 A` by

A

putting in parallel a resistance of 240`Omega`

B

putting in series a resistance of 15`Omega `

C

putting in series a resistance of 240`Omega `

D

putting in parallel a resistance of 15`Omega `

Text Solution

Verified by Experts

The correct Answer is:
D
`S = (I_g)/(I - I_g) F = (1)/(5 - 1) 60 = 15 Omega`
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NARAYNA-MOVING CHARGES AND MAGNETISM-EXERCISE - 3
  1. A galvanometer of resistance 50Omega is connected to a b attery of 3V ...

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  2. The magnetic force acting on a charged particle of charge -2 muC in ...

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  3. A galvanometer having a coil resistance of 60 Omega shows full scale...

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  4. A galvanometer coil has a resistance of 10A and the meter shows full ...

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  5. A long straight wire of a circular cross-section (radius a) carries a ...

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  6. The gyromagnetic ratio of an electron of charge e and mass m is equal ...

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  7. A beam of cathode rays is subjected to crossed electric (E ) and magn...

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  8. A thin ring of radius R metre has charge q coulomb uniformly spread ...

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  9. A galvanometer has a a coil resistance 100 ohm and gives a full scale ...

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  10. A square current carrying loop is suspended in a unifrom magnetic ...

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  11. Charge q is uniformly spread on a thin ring of radius R. The ring rota...

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  12. A square loop, carrying a steady current I, is placed in a horizontal ...

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  13. A uniform electric field and a uniform magnetic field are acting along...

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  14. A current carrying closed loop in the from of a right angle isosel...

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  15. An alternating electric field, of frequency v, is applied across the d...

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  16. Two similar coils of radius R are lying concentriclaly with their pl...

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  17. A current loop in a magnetic field

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  18. Two identical long conducting wires AOB and Cod are placed at right an...

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  19. A wire carrying current I has the shape as shown in the adjoining ...

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  20. A long wire carries a steady curent . It is bent into a circle of one ...

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