Question

2) (20p) A group of students are assigned to measure 4 different unknown resistors resistance values by using wheatstone bride. As a result of their experiment they have recorded 4 values where galvenometer reading reaches zero: R: R, RI R. Sample code R Rx (Calculated) 330 12 1.50 KS2 RO 1.00 S2 RL 33.0 k2 Please do the calculation in order to find resistance values of the samples and fill the table above. (total length of the slide wire is 4+4-800 mm) 4 mm) 469 437.5 381 361

Answer 1

Rx R in balance Case of wheatstone bridge. ratio of crossponding side are equal (or) from circuit Rx R RxR, = RR, RI R. Rx = RR = R(A R2 R for Reading -1 R=3zou li= 469x153m then dy = 800-469) x100 m Rxo = 330 x 469x103 - 467.58 331x103 for Reading - R = 1.5x103 , li= 437.5X163 m ;d2= (600- 437-5) x103 m 437258103 Rxz = (1.5x103) [ [es 1810.34 u 1-8ku 362.5x 103 for Reading - 3 R=10 J. = 381X163 m ; z- (800-361)x16). 419x162m Rxz = 1x 1 x 381x103 419x103 -0.gogu for Reading 4 R=334103 1,2361X/63m 12= (800-362 ) x103 = 439x103 m Rx = 33x103 33x103 x 361x103 - 27.14 ku 4398163 Ans. Rx1 = 467.58n Rxz - 0.999m Rx2 1.8ku Rx4 = 27.14kn CScanned with CamScanner