a) A battery has an emf of 12.0 V and internal resistance of 0.050 . Its terminals are connected to a load resistance of 3.00 2. Hence the terminal voltage of the battery is about 11.8 V. b) The equivalent resistance of a series combination of resistors is always greater than any individual resistance. c) Two resistors 6.00 2 and 3.00 2 are connected in parallel combination. A third resistor 12.0 is connected in series with the parallel combination above. Hence the circuit equivalent resistance is equal to 14.00. d) Kirchhoff's junction rule states that at any junction, the sum of the currents must be zero, and the loop rule states that the sum of potential differences across all elements around any circuit loop must be zero. e) A circuit containing a series and parallel combination of a resistor and capacitor is called an RC circuit.

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Chapter28: Direct-current Circuits
Section: Chapter Questions
Problem 28.3OQ: The terminals of a battery are connected across two resistors in series. The resistances of the...
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a) A battery has an emf of 12.0 V and internal resistance of 0.050 Q. Its terminals are
connected to a load resistance of 3.00 2. Hence the terminal voltage of the battery is about
11.8 V.
b) The equivalent resistance of a series combination of resistors is always greater than any
individual resistance.
c) Two resistors 6.00 2 and 3.00 2 are connected in parallel combination. A third resistor 12.0
is connected in series with the parallel combination above. Hence the circuit equivalent
resistance is equal to 14.00.
d) Kirchhoff's junction rule states that at any junction, the sum of the currents must be zero,
and the loop rule states that the sum of potential differences across all elements around any
circuit loop must be zero.
e) A circuit containing a series and parallel combination of a resistor and capacitor is called an
RC circuit.
Transcribed Image Text:a) A battery has an emf of 12.0 V and internal resistance of 0.050 Q. Its terminals are connected to a load resistance of 3.00 2. Hence the terminal voltage of the battery is about 11.8 V. b) The equivalent resistance of a series combination of resistors is always greater than any individual resistance. c) Two resistors 6.00 2 and 3.00 2 are connected in parallel combination. A third resistor 12.0 is connected in series with the parallel combination above. Hence the circuit equivalent resistance is equal to 14.00. d) Kirchhoff's junction rule states that at any junction, the sum of the currents must be zero, and the loop rule states that the sum of potential differences across all elements around any circuit loop must be zero. e) A circuit containing a series and parallel combination of a resistor and capacitor is called an RC circuit.
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