Home
Class 12
PHYSICS
The resistance of an ideal ammeter is ....

The resistance of an ideal ammeter is _______ .

A

zero

B

small

C

high

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER -10 (SOLVED)

    FULL MARKS|Exercise PART - II|9 Videos
  • SAMPLE PAPER -10 (SOLVED)

    FULL MARKS|Exercise PART - III|9 Videos
  • SAMPLE PAPER - 20 (UNSOLVED)

    FULL MARKS|Exercise PART - IV|10 Videos
  • SAMPLE PAPER -12

    FULL MARKS|Exercise PART-IV|10 Videos

Similar Questions

Explore conceptually related problems

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

The efficiency of an ideal transformer is

The net resistance of an ammeter should be small to ensure that

Should the resistance of an ammeter be low or high ? Give reason.

Figure shows a part of an electric circuit. The wires AB, CD, and EF are long and have identical resistances. The separation between the neighbouring wires is 1.0 cm. The wires AE and BF have negligible resistances and the ammeter reads 30 A . Calculate the magnetic force per unit length of AB and CD.

In an ammeter 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance of ammeter will be

Shown an arrangement to measure the emf (epsilon) and internal resistance r of a battery. The voltmeter has a very high resistance and the ammeter also has some resistance.The voltmeter reads 1.52 V when the switch S is open.When the switch is closed the voltmeter reading drops to 1.45 V and the ammeter read 1.0A Find the emf and the internal resistance of the battery.