Question: 5. When a 9.0-p.C charge is placed 0.12 cm from a charge q in a vacuum, the force between the two charges is 850 N.

5. When a 9.0-p.C charge is placed 0.12 cm from a charge q in a vacuum, the force between the two charges is 850 N. What is the value of q? 6. How far apart are two identical charges of +6.00 p.C if the force between them is 25.0 N? 3. (a) Find the resistance of R3 in the circuit in Fig. 17.49. (b) What is the current through R1? (0) What is the current through R3? 4. (a) What is the equivalent resistance in the circuit shown in Fig. 17.50? (b) What emf is required for the circuit? (c) What is the voltage drop across each resis- tance? (d) What is the current through each resistance? Figure 17.49 Figure 17.50 12. What is the voltage drop across R3? Figure 17.55 Figure 17.56 F12: 4009 Ha =10.0o 93:4.009

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