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Section 1 Current and Circuits Practice Problems

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Section 1 Current and Circuits: Practice Problems
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V = IR = (0.30 A)(2.1×102 Ω )
= 6.3×101 V

b. The total resistance of the circuit is now
= 4.2×102 Ω
Therefore,
Rres = Rtotal − Rlamp
= 4.2×102 Ω − 2.1×102 Ω
= 2.1×102 Ω
c. P = IV = (0.30 A)(6.3×10 1 V)
= 19 W
Section 1 Current and Circuits: Review
19. MAIN IDEA Explain how charged particles are related to electric current, electric circuits, and resistance.
SOLUTION:
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