The actual value resistance R, shown in the figure is 30. This is measured in an experiment as showing using the standard formula R=, where V and I are the readings of the voltmeter and ammeter, respectively. If the measured value of R is 5% less, then the internal resistance of the voltmeter is: (a) 350 (b) 570 (c) 35 (d) 600

Question ID - 50250 :- The actual value resistance R, shown in the figure is 30. This is measured in an experiment as showing using the standard formula R=, where V and I are the readings of the voltmeter and ammeter, respectively. If the measured value of R is 5% less, then the internal resistance of the voltmeter is: (a) 350 (b) 570 (c) 35 (d) 600

3537

0.95 R=

0.95×30=0.05 R0

R0=19×30=570

Next Question :
 An unknown metal of mass 192 g heated to a temperature of 100°c was immersed into a brass calorimeter of mass 128 g containing 240 g of water a temperature of 8.4°c calculate the specific heat of the unknown metal if water temperature stabilizes at 21.5°c(specific heat of brass is 394 J k−1 K−1) (a) 1232 J kg−1 K−1 (b) 458 J kg−1 K−1 (c) 654 J kg−1 K−1 (d) 916 J kg−1 K−1