College Physics
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ISBN: 9781305952300
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Publisher: Cengage Learning
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Transcribed Image Text:When a 21.0-2 resistor is connected to a battery that has a 7.0-92 internal resistance the
terminal voltage of the battery is 9.0 V. Determine the emf of the battery (in V).
9.5
10.0
12.0
12.5
7.0
a.
b.
C.
d.
e.
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- 26. Four resistors are connected to a battery as shown in the figure below, with ɛ = 15.0 V, R1 = 10.0 Ω, R2 - 20.0 Ω , R3- 40.0 Ω , and R4-30.0 Ω. %3D R2 R1 R4 AL R3 a) What is the equivalent resistance of the circuit? b) What is the potential (in volts) across each of the four resistors? c) What is the current across each of the four resistors?arrow_forward7. Two identical 50 resistors and a 100 resistor are connected in a circuit. Which of the following cannot be the effective resistance of these resistors? A. 20 Ω Β. 12.5 Ω C. 8.3 D. 17.5arrow_forwardA certain person will experience a mild electric shock when the current between two fingers exceeds 72uA. If. The resistance between their thumb and index finger is measured to be 215ohms, how much voltage can be applied before they feel a mild shock? a. 15.5uV b. 33.5uV c. 29.9uV d. 29.9V e.15.5Varrow_forward
- 13arrow_forward6. In the figure R1 = 6.65 N, R2 = 20.0 N, and the ideal battery has emf ɛ = 13.9 V. How much energy in J is dissipated by all four resistors in 0.02017 hour? R1 R R2 ww (a) 1.98x10² (b) 1.05x103 (c) 2.02x10³ (d) 1.83x10³ (e) None of the abovearrow_forwardR1 100KO R2 300KN V1 12V Determine: a. The theoretical voltage across R2 b. The actual voltage measured across R2 by a voltmeter whose input resistance = 600 KQarrow_forward
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