{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Experiment 3 Write Up

# Experiment 3 Write Up - Purpose To use a voltmeter and...

This preview shows pages 1–2. Sign up to view the full content.

Purpose: To use a voltmeter and ammeter to measure resistance of a conductor and to study factors on which the resistance of a conductor depend. Also applying measurement skills to verify the mathematical relations for resistance in a parallel, series, or combination circuit. Procedure: 1. Record length, cross sectional area and resistivity for coils 1-5 2. Connect coil 1 as in Figure 1 3. Close switch and determine voltmeter and ammeter readings (V=1.00) 4. Repeat for coils 2-5 5. Measure resistance for resistors with multimeter and record in Table 5 6. Calculate theoretical value of R sth R pth R tth 7. With R1, R2, and R3 set up as in Figure 5, use voltmeter to determine difference in points A-D, A-B, B-C, and C-D 8. Insert ammeter at A and record the current. 9. Repeat for points B C and D. 10. Connect R1 R2 R3 as in Figure 6 and connect ammeter into circuit as shown in position 1 and record the current through 1 11. Repeat for positions 2-4 12. Connect R1 R2 and R3 as in Figure 7 13. Measure current for all positions 14. Measure potential drop across each resistor Data: See attached Results: The first coil had a length of 10 meters with a cross sectional area of 2.913 x 10 -7 . A resistivity of 1.72 x 10 -8 Ohms was determined with measured voltage of 0.135 Volts and a current of 0.1846 Amps. The theoretical resistance value (0.5896 Ohms) was then compared with the experimental resistance value (0.7313 Ohms) and a percent difference of 24.03 % was found. The second coil had a length of 10 meters with a cross sectional area of 7.293 x 10 -7 . A resistivity of 1.72 x 10 -8

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 3

Experiment 3 Write Up - Purpose To use a voltmeter and...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online