Lecture Notes - General Physics II | PHY 212, Study notes of Physics

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• Lecture 10.

Which of these diagrams represent the same circuit?

E. a, b, and cD. a, b, and dC. a and cB. b and c A. a and b

EXAMPLE 32.10 A combination of resistorsEXAMPLE 32.10 A combination of resistors

EXAMPLE 32.10 A combination of resistorsEXAMPLE 32.10 A combination of resistors

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How should Ammeters be Connected

Ammeter measures the current flow

(^) through

(^) it.

whose current needs to be measured!Ammeter must be connected in series with circuit elements

Ammeter also has resistance (very small).

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How should Voltmeter be Connected

points on the circuit where it is connected.Voltmeter measures the potential difference between two

element whose voltage needs to be measured.Voltmeter must be connected in parallel with the circuit

flowing through it can be neglected.Voltmeter has very large resistance, so that the current

Copyright © 2008 Pearson Education, Inc., publishing as Pearson Addison-Wesley. Example: two loop circuit, Find the current through and

voltage across the 100Ohm resistor

RC Circuit: Charging a Capacitor

this capacitor isfor the discharge of The time constant

E. The capacitor doesn’t discharge becauseD. 4 s.C. 2 s.B. 1 s. A. 5 s. the resistors cancel each other.