Chapter 30 - Worksheet Material Below are typical values of resistivity for various samples of water. Suggest reasons for the wide variation in values. Sample Resistivity (2m) Pure water 2x107 Distilled water 5x10 Rainwater 2x104 Tap water 100-5000 Sea water 30

1)What is resistivity of wire? 2)Rnew = ? 3) Inew = ?

Use Nodal Analysis to determine vo in the circuit. 30 V 20 V + 4 k2 Vo 2 k2 5 k2

2. In the fig. below, how large must R if the potential drop from A to B is 12 V. The current is 3.0 A. 6.0 V 2.02 9.0 V 3.0 A

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Calculate the resistance of 100-m wire having a cross-sectional area of 0.1mm^2 and made of manganin which has a resistivity of 50x10^-8 Q.m. Answer in whole number form. * Your answer

How to solve this question

The following are needed to determine the current density of a conductor except: A. Current B. Resistance C. Radius D. Cross sectional area

Question 12 What is the potential difference if a current of 3 A flows through a resister with a value of 20 ohms? 6.67 V 17 V 0.15 V 60 V

find q value...