Page 581 - MODUL SPEKTRUM FIZIK SPM
P. 581

(d)        Relationship between 1/I  and q
                                                                                             1
                               1/I  increases linearly with q
                    (e)        Precaution
                                                                                             1
                               The position of eyes must be perpendicular to the
                               scale of the ammeter to avoid parallax error.

               (SET 11)

                     Question                   Answer Scheme                         Marks Allocated
                      (a)(i)   MV: Number of turns// N                                       1
                    (a)(ii)    RV: Induced current// I                                       1
                    (a)(iii)   CV: Height of bar magnet released                             1
                    (b)(i)     Zero error, x = -1 µA                                         1
                    (b)(ii), (iii)  Readings of Ii and I
                                Diagram 1.3     Ii = 16 µA
                                                I = 17 µA
                                Diagram 1.4     Ii = 24 µA
                                                I = 25 µA
                                Diagram 1.5     Ii = 32 µA
                                                I = 33 µA
                                Diagram 1.6     Ii = 40 µA
                                                I = 41 µA
                                Diagram 1.7     Ii = 48 µA
                                                I = 49 µA

                               ✔1 : 3 readings of Ii correct                                 2
                               ✔2 : All readings of Ii correct

                               ✔1 : 3 readings of I correct                                  2
                               ✔2 : All readings of I correct (Accept ecf)

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