In an experiment to measure the internal resistance of a cell by a potentiometer, it is found th...

Channel:
Subscribers:
447,000
Published on ● Video Link: https://www.youtube.com/watch?v=u7BXli9n4l0



Duration: 7:09
20 views
1


In an experiment to measure the internal resistance of a cell by a potentiometer, it is found that the balance point is at a length of \( 2 \mathrm{~m} \) when the cell is shunted by a \( 5 \Omega \) resistance and is at a length of \( 3 \mathrm{~m} \) when the cell is shunted by a \( 10 \Omega \) resistance, the internal resistance of the cell is then
(1) \( 1.5 \Omega \)
(2) \( 10 \Omega \)
(3) \( 15 \Omega \)
(4) \( 1 \Omega \)
šŸ“²PW App Link - https://bit.ly/YTAI_PWAP
🌐PW Website - https://www.pw.live




Other Videos By PW Solutions


2022-10-27In the circuit shown in figure, the cell is ideal with emf \( 9 \mathrm{~V} \). If the resistanc...
2022-10-27Three ammeters \( A, B \), and \( C \) of resistances \( R_{A}, R_{B} \), and \( R_{C} \), respe...
2022-10-27Figure shows a balanced Wheatstone bridge. (1) If \( P \) is slightly increased, the current in ...
2022-10-27(1) \( r_{A}=2 r_{B} \) (2) \( r_{A}=3 r_{B} \) (3) \( r_{B}=2 r_{A} \) (4) \( r_{B}=3 r_{A} \)
2022-10-27In figure, voltmeter is not ideal. If the voltmeter is removed from \( R_{1} \) and then put acr...
2022-10-27Two voltmeters and two resistances are connected as shown in figure. On closing the switch \( S ...
2022-10-27In the above question, if the polarity of \( E_{2} \) is reversed, then (1) current in both amme...
2022-10-27In figure the voltmeter and ammeter shown are ideal. Then voltmeter and ammeter readings, respec...
2022-10-27A voltmeter reads the potential difference across the terminals of an old battery as \( 1.40 \ma...
2022-10-27The emf of the driver cell of a potentiometer is \( 2 \mathrm{~V} \), and its internal resistanc...
2022-10-27In an experiment to measure the internal resistance of a cell by a potentiometer, it is found th...
2022-10-27When an ammeter of negligible internal resistance is inserted in series with circuit, it reads \...
2022-10-27An \( 80 \Omega \) galvanometer deflects full-scale for a potential of \( 20 \mathrm{mV} \). A v...
2022-10-27In the above question, if the balancing length for a cell of \( \operatorname{emf} E \) is \( 60...
2022-10-27Figure shows a balanced Wheatstone net. Now, it is disturbed by changing \( P \) to \( 11 \Omega...
2022-10-27In the circuit shown in figure, an ideal ammeter and an ideal voltmeter are used. When the key i...
2022-10-27In the given circuit, the voltmeter and the electric cell are ideal. Find the reading of the vol...
2022-10-27Figure shows a simple potentiometer circuit for measuring a small emf produced by a thermocouple...
2022-10-27In which of the following arrangements of resistors does the meter \( M \), which has a resistan...
2022-10-27Find the current in \( 5 \Omega \) resistance (in A) in circuit shown ir figure.
2022-10-27Nine wires each of resistance \( r=5 \Omega \) are connected to make a prim as shown in figure. ...



Tags:
pw