A battery is connected to a potentiometer and a balance point is obtained at \( 84 \mathrm{~cm} ...

Channel:
Subscribers:
447,000
Published on ● Video Link: https://www.youtube.com/watch?v=t-EdJWaXfyc



Duration: 2:25
0 views
0


A battery is connected to a potentiometer and a balance point is obtained at \( 84 \mathrm{~cm} \) along the wire. When its terminals are connected by a \( 5 \Omega \) resistor, the balance point changes to \( 70 \mathrm{~cm} \).
Find the new position of the balance point when \( 5 \Omega \) resistor is changed by \( 4 \Omega \) resistor.
(1) \( 26.5 \mathrm{~cm} \)
(2) \( 52 \mathrm{~cm} \)
(3) \( 67.2 \mathrm{~cm} \)
(4) \( 83.3 \mathrm{~cm} \)
📲PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live




Other Videos By PW Solutions


2022-10-27A uniform rod \( O A \) of length \( l \), resting on smooth surface is slightly distributed fro...
2022-10-27Find the mass of the rocket as a function of time, if it moves with a constant acceleration a, i...
2022-10-27In the question no. 35 , the velocity of end \( A \) at the instant it hits the ground is (a) \(...
2022-10-27A uniform \( \operatorname{rod} A B \) of length \( L \) and mass \( m \) is suspended freely at...
2022-10-27A thin uniform rod of mass \( M \) and length \( L \) is hinged at its upper end, and released f...
2022-10-27A child with mass \( m \) is standing at the edge of a merry go round having moment of inertia \...
2022-10-27battery current. (1) If \( R_{2}=R_{1}, I_{1}=I_{2}=0.15 \mathrm{~A} \) and \( I_{3}=0.05 \mathr...
2022-10-27A block of mass \( 2 \mathrm{~kg} \) is attached with a spring of spring constant \( 4000 \mathr...
2022-10-27An element with emf \( \varepsilon \) and internal resistance \( r \) is connected across an ext...
2022-10-27Two identical balls marked 2 and 3 , in contact with each other and at rest on a horizontal fric...
2022-10-27A battery is connected to a potentiometer and a balance point is obtained at \( 84 \mathrm{~cm} ...
2022-10-27A cell of emf \( 3.4 \mathrm{~V} \) and internal resistance \( 3 \Omega \) is connected to an am...
2022-10-27A circuit is shown below. (1) If \( A \) is an ideal ammeter, \( B \) an ideal battery of voltag...
2022-10-27A battery is connected to a potentiometer and a balance point is obtained at \( 84 \mathrm{~cm} ...
2022-10-27The current in a conductor and the potential difference across its ends are measured by an ammet...
2022-10-27All the resistance in the given Wheatstone bridge have different values and the current through ...
2022-10-27In the circuit shown, battery, ammeter, and voltmeter are ideal and the switch \( S \) is initia...
2022-10-27Two ideal batteries and two ammeters are arranged as shown in figure. (1) Readings of both ammet...
2022-10-27The galvanometer shown in the figure has resistance \( 10 \Omega \). It is shunted by a series c...
2022-10-27A voltmeter having a resistance of \( 1800 \Omega \) is employed to measure the potential differ...
2022-10-27The diagram shows a modified meter bridge, which is used for measuring two unknown resistances a...



Tags:
pw