Home
Class 12
PHYSICS
A galvanometer having a resistance of 50...

A galvanometer having a resistance of 50Ω gives a full scale deflection for a current of 0.05 A. The length in meter of a resistance wire of area of cross section 3×10^−3 cm^2 that can be used to convert the galvanometer into an ammeter which can read a maximum of 5A current is [specific resistance of the wire =5×10^−7 Ωm]

Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETISM

    BINA LIBRARY|Exercise EXERCISE|105 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    BINA LIBRARY|Exercise EXERCISE|101 Videos

  • ELECTRONIC DEVICES

    BINA LIBRARY|Exercise EXERCISE|108 Videos

Similar Questions

Explore conceptually related problems

A galvanometer having a coil resistance 120 Omega shows full scale deflection for a current of 2.5 mA. How would you convert it into an ammeter of range 0 to 75A?

A galvanometer coil has a resistance of 10Omega and the meter shows full scale deflection for a current of 2.5 mA. How will you convery the metre into an ammeter of range 0 to 4A.

A miliammeter of resistance 5 ohms gives a full scale deflection for a current of 15 mA. If the milliammeter is to be used to measure currents upto 1.5 A the size of the resistance that must be attached to the milliammeter is ?

A galvanometer has an internal resistance of 1.0 ohm. It gives maximum deflection for current of 50 mA. Show how it can be converted into (i) a voltmeter with a maximum reading a of 2.5 volts, (ii) an ammeter with a maximum reading of 2.5 A.

A galvanometer gives full scale deflection with 0.2 mA. The resistance of its coil is 1000 ohms. How much shunt resistance is required to converted into an ammeter to measure currents upto a 2 amperers?

How will you convert galvanometer which needs 50 mA for full scale deflection into a voltmeter reading upto 2.5 volts ? The resistance of the galvanometer is 10 ohms.

Find the resistance of a silver wire of length 5m and area of cross-section 4mm^2 . Resistivity of a silver is 1.6xx10_-8 Omega m.