(i) In fig. `6.7`, find the potential difference berween the points `A` and `B`.
(ii) Now we wish to measure this potential difference by using a voltemter of resistance `2 k Omega`. Find the reading of the voltumeter and percentage error.
(ii) Solve part (ii) if the voltumter were of resistance `20 k Omega`. What conculsion do you draw from the results you get in the above parts?

Resistance R_1 and R_2 , each 60 Omega , are connected in series. The Potential difference between points A and B is 120 V . Find the reading of voltmeter connected resistance r=120Omega

Resistances R_(1) and R_(2) , each 600 Omega , are connected in series as shown in figure-3.382. The potential difference between points A and B is 120 V. Find the reading of voltmeter connected between points C and D ifits resistance is 120 Omega

(a) Find the value of i and potential difference across each cell. (b) Find potential difference between A and B . ( c) In the given circuit, find (i) potential difference between terminals 10 V cell (ii) current through 25 V cell (iii) current through 5 Omega (d) Find the current through resistance 5 Omega . .

(a) What do you understand by the term ''potential difference''? (b) What is meant by saying that the potential difference between two points is 1 volt? (c) What is the potential difference between the terminals of a battery if 250 joules of work is required to transfer 20 coulombs of charge from one terminal of battery to the other? (d) What is a voltmeter? How is a voltmeter connected in the circuit to measure the potential difference between two points. Explain with the help of a diagram. (e) State whether a voltmeter has a high resistance or a low resistance. Give reason for your answer.

As shown in figure a variable rheostat of 2kOmega is used to control the potential difference across 500 ohm load. (i) If the resistance AB is 500 Omega , what is the potential difference across the load ? (ii) If the load is removed, what should be the resistance at BC to get 40 volt btween B and C ?

As shown in figure a variable rheostat of 2kOmega is used to control the potential difference across 500 ohm load. (i) If the resistance AB is 500 Omega , what is the potential difference across the load ? (ii) If the load is removed, what should be the resistance at BC to get 40 volt btween B and C ?