A battery (e = 10V) is connected the six light bulbs (L, through La) in the following circuit. All light bulbs have the same resistance of 10n. After the switch K is closed, the bulbs are lit up. Which of the followings are true I. La and L, bulbs have equal brightness II. If L, and L, bulbs burn out, no other bulb in the circuit will glow. III. The EMF source generates new electrons and supplies them to the electric circuit. 4) A battery with unknown emf (e) and internal resistance (r) is connected 7 puanto a circuit that involves an ideal voltmeter, a switch, and two resistors R1 =1Q, R2 =10 Q, as shown below. When the switch is connected to a, thevoltmeter reads 7 V. When the switch is connected to b, the voltmeterreads 10 V. Calculate the value of the internal resistance r.a31R,RzO 0.12 00.25 Q1.00 00.75 00.50 0Diğer:www

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Answered: 4) A battery with unknown emf (e) and…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter29: Direct Current (dc) Circuits

Section: Chapter Questions

Problem 19PQ

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A battery (e = 10V) is connected the six light bulbs (L, through La) in the following circuit. All light bulbs have the same resistance of 10n. After the switch K is closed, the bulbs are lit up. Which of the followings are true I. La and L, bulbs have equal brightness II. If L, and L, bulbs burn out, no other bulb in the circuit will glow. III. The EMF source generates new electrons and supplies them to the electric circuit.

4) A battery with unknown emf (e) and internal resistance (r) is connected 7 puan
to a circuit that involves an ideal voltmeter, a switch, and two resistors R1 =1
Q, R2 =10 Q, as shown below. When the switch is connected to a, the
voltmeter reads 7 V. When the switch is connected to b, the voltmeter
reads 10 V. Calculate the value of the internal resistance r.
a
31
R,
Rz
O 0.12 0
0.25 Q
1.00 0
0.75 0
0.50 0
Diğer:
www

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