Operating instructions 550 57
Contents
1. LD DIDACTIC GMBH Leyboldstrasse 1 D 50354 Huerth Germany Phone 02233 604 0 Fax 02233 604 222 e mail info ld didactic de by LD Didactic GmbH Printed in the Federal Republic of Germany Technical alterations reserved2. Physics Chemistry Biology Technology 06 05 W97 Sel c 6 6 6 866 1 Description The apparatus for resistance measurements is used for demon strating Ohm s law and for verifying the dependency of the re sistance on the length cross sectional area and conductor material 3 Operation also required 1 AC DC power supply 521 49 1 Ammeter DC lt 3A e g 531 120 1 Voltmeter DC U lt 15 V e g 531 120 Measurements with individual wires Lehr und Didaktiksysteme LD Didactic GmbH Leyboldstrasse 1 D 50354 Huerth Operating instructions 550 57 Apparatus for resistance measurements 550 57 1 connection sockets 2 resistance wires 2 Technical data Wire length 1m 30 cm x 12cm x 3 cm 3 5 kg Dimensions Mass Series connection of the two constantan wires Operating instructions 550 57 Page 2 2 4 Resistance wires Nel Resistance wire Material Specific resistance Diameter wel iea ae Herta 1 Constantan 1 1 0 mm 0 8 mm 0 620 2 0 V 3 3A 2 Constantan 0 7 Constantan Qmm2 0 7mm 0 4mm 1 30 25V 21A 1 Constantan 0 5 56 Cu 44 Ni pag m 0 5mm 0 2 mm 2 50 3 2V 1 3A 1 Constantan 0 35 0 35mm 0 1mm 5 12 4 0V 0 8 A 1 Brass 0 5 eS ee Zn 0 065 Qmm 0 5mm 0 2mm 0 339 15V 4 0A
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