Home
Class 11
PHYSICS
In the circuit shown, voltmeter is ideal...

In the circuit shown, voltmeter is ideal and its least count is 0.1 V. The least count of ammeter is 1 mA. Reading of the voltmeter be 30.0 V and the reading of ammeter is 0.020 A. We shell calculate the value of resistance R within error limits.

Text Solution

Verified by Experts


`V =30.0,I=0.020A,R=(V)/(I)=(30.0)/(0.020)=1.50kOmega`
Error : As `R=(V)/(I):.(DeltaR)/(R)=(DeltaV)/(V)+(DeltaI)/(I)rArr DeltaR=R((DeltaV)/(V)+(DeltaI)/(I))`
`=1.50xx10^(3)((0.1)/(30.0)+(0.001)/(0.020))=0.080kOmega`
So, resistance is `(1.2 pm 0.08 k Omega)`
Promotional Banner

Topper's Solved these Questions

  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-3(Example)|32 Videos

  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-1(Exercise-01)|53 Videos

  • WAVES AND OSCILLATIONS

    ALLEN |Exercise Part-1(Exercise-05)[B]|42 Videos

  • SEMICONDUCTORS

    ALLEN |Exercise Part-3(Exercise-4)|50 Videos

Similar Questions

Explore conceptually related problems

The radius of a sphere is measured to be (2.1+-0.5) cm. Calculate its surface area with error limits .

In the circuit shown the resistance of voltmeter is 10000 ohm and that of ammeter is 20 ohm . The ammeter reading is 0.10 amp and voltmeter reading is 12 volts. Then R is equal to

The scales of an ammeter and a voltmeter are shown below: Find the least count of the ammeter and the voltmeter.

In a voltmeter there are 20 divisions between 0 mark and 0.5 V mark. Calculate the least count of the voltmeter.

A student connects a voltmeters, ammeter and resistance according to the circuit given. If the voltmeter reading is 20V and ammeter reading is 4A, then the resistance will be

The sides of a rectangle are (10.5 +- 0.2) cm and ( 5.2 +- 0.1 ) cm . Calculate its perimeter with error limits .

The ammeter A reads 2A and the voltmeter V reads 20V, the value of resistance R is (Assuming finite resistance's of ammeter and voltmeter)

An ammeter has a range (0 - 3A) and there are 30 divisions on its scale. Calculate the least count of the ammeter.

A vernier callipers having 1 main scale division = 0.1 cm to have a least count of 0.02 cm .If n be the number of divisions on vernier scale and m be the length of vernier scale, then.

For given CE biasing circuit, if voltage across collector-emitter is 12 V and current gain is 100 and base current is 0.04 mA then determine the value of collector resistance R_(C) . .