Home
Class 12
PHYSICS
The resistanca of an ammeter is 13Omega ...

The resistanca of an ammeter is `13Omega` and its scale is graduated for a current upto 100 connected to this ammeter it becomes possible to measure currents upto 750 A by this meter. The value fo shunt resistance is

A

`2 K Omega`

B

`20 Omega`

C

`2 Omega`

D

`0.2 Omega`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

The resistance of an ammeter is 13 Omega and its scale is graduated for a current upto 100 A . After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 A by this meter. The value of shunt resistance is

A moving coil galvanometer has 50 turns and each turn has an area 210 . The magnetic field produced by the magnet inside the galvanometer is 0.02 . The torsional constant of the suspension wire is 10 . When a current flows through the galvanometer, a full scale deflection occurs if the coil rotates by 0.2 . The resistance of the coil of the galvanometer is 50 . This galvanometer is to be converted into an ammeter capable of measuring current in the range 01.0 . For this purpose, a shunt resistance is to be added in parallel to the galvanometer. The value of this shunt resistance, in , is __________.

An ammeter of resistance 0*80Omega can measure current upto 1*0A . (a) What must be the value of shunt resistance to enable the ammeter to measure current upto 5*0A ? (b) What is the combined resistance of the ammeter and the shunt?

A galvanometer with its coil resistance 25 Omega requires a current of 1 mA for its full deflection. In order to construct an ammeter to read up to a current of 2A, the approximate value of the shunt resistance should be :

An ammeter of resistance 0.6Omega can measure current upto 1.0 A. Calculate (i) The shunt resistance required to enable the ammeter to measure current upto 5.0 A (ii) The combined resistance of the ammeter and the shunt.

A voltmeter coil has resistance 50.0(Omega) and a resistor of 1.15k(Omega) is connected in series.It can read potential differences upto 12 volts.If this same coil is used to construct an ammeter which can measure currents up to 2.0A ,What should be the resistance of the shunt used ?

The resistance of an ammeter of range 5A is 1.8Omega A shunt of 0.2Omega is connected in parallel to it. When its indicator shows a current of 2A then what will be effective current?

A battery of emf 1.4 V and internal resistance 2 Omega is connected to a resistor of 100 omega resistance through an ammeter. This resistance of the ammeter is 4//3 Omega . A voltmeter has also been connected to find the potential difference across the resistor. a. Draw the circuit diagram. b. The ammeter reads 0.02 A . What is the resistance of the voltmeter? c. The voltmeter reads 1.1 V . What is the error in the reading?

If the galvanometer current is 10 mA, resistance of the galvanometer is 40 Omega and shunt of 2 Omega is connected to the galvanometer, the maximum current which can be measured by this ammeter is

A galvanometer of resistance 100Omega gives full scale deflection for 10mA current. What should be the value of shunt, so that it can measure a current of 100mA?