How can you make a potentiometer of given wire length more sensitive using a resistance box?
Text Solution
Verified by Experts
This can be achieved by using more resistance from the resistance box in the potentiometer wire circuit. Which in turn will decrease the current in the potentiometer wire and comsequently, the potential gradient of wire will decrease. As a result of it , the sensitivity of the potentiometer will increase.
Topper's Solved these Questions
CURRENT ELECTRICITY
PRADEEP|Exercise Conceptual Problems|3 Videos
CURRENT ELECTRICITY
PRADEEP|Exercise Very short Q/A|7 Videos
COMMUNICATION SYSTEMS
PRADEEP|Exercise MODEL TEST PAPER-2|9 Videos
DUAL NATURE OF RADIATION AND MATTER
PRADEEP|Exercise Exercise|191 Videos
Similar Questions
Explore conceptually related problems
A potentiometer is more sensitive when
A 2 V battery, a 990Omega resistor and a potentiometer of 2 m length, all are connected in series of the resistance of potentiometer wire is 10Omega , then the potential gradient of the potentiometer wire is
The resistance of a potentiometer wire of length 10 m is 20 Omega . A resistance box and a 2 volt accumulator are connected in series with it. What resistance should be introduced in the box to have a potential drop of one microvolt per millimetre of the potentiometer wire ?
A 2 volt battery, a 15 Omega resistor and a potentiometer of 100 cm length, all are connected in series. If the resistance resistance of potentiometer wire is 5 Omega , then the potential gradient of the potentiometer wire is
How can the sensitivity of a potentiometer be increased?
The resistance of a potentiometer wire is 10 Omega and its length is 10m. A resistance box and 2V accumulator are placed in series with it. The value of resistance in the resistance box, if it is desired to have potential drop of 1 microvolt/mm is
Calculate the value of unknown potential V for the given potentiometer circuit .The total length 400 cm of potentiometer wire has a resistance of 10 Omega and the balance point in obtained at a length of 240 cm
A potentiometer wire of length 100 cm has a resistance of 100Omega it is connected in series with a resistance and a battery of emf 2 V and of negligible internal resistance. A source of emf 10 mV is balanced against a length of 40 cm of the potentiometer wire. what is the value of the external resistance?
PRADEEP-CURRENT ELECTRICITY-Problems for Practice (B)
