Solve the following:1. A certain light bulb has a resistance of 150 when lighted. How much current will flow through it whenconnected across a 220 V, its normal operating voltage? Draw the circuit schematic diagram>Fin2. Find the potential difference (Emf) in a certain electric circuit with current flowing at 18 ampere and a floorPolisher connected with resistance of 12 ?3. A 12 volts battery operates a 15 ohms digital scale for 5.2 minutes. a) Find the current flowing b) the chargesTransferred with the given time.4. What is the resistance of a conductor at 50° C if its resistance at 0°C is 1 ohm and the temperature coefficientof resistance of 9.8 x 10-³/°C5. A silver wire has a resistance of 2.3 at 0°C and a temperature coefficient of resistance of 3.75 x 10-³/°C.What is final temperature when the final resistance is 3.8 ohms. ?6. Complete the table:Electric Circuit and Ohm's LawV, Volts8 volts20 volts10 Volts36 voltsI, Ampere2.8 mA40A130mAR, ohms156 0225 ΚΩ450 ΚΩ

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A certain light bulb has a resistance of 150 when lighted. How much current will flow through it when connected across a 220 V, its normal operating voltage ? Draw the circuit schematic diagram>Fin

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 51PQ

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Question

Solve the following:
1. A certain light bulb has a resistance of 150 when lighted. How much current will flow through it when
connected across a 220 V, its normal operating voltage? Draw the circuit schematic diagram>Fin
2. Find the potential difference (Emf) in a certain electric circuit with current flowing at 18 ampere and a floor
Polisher connected with resistance of 12 ?
3. A 12 volts battery operates a 15 ohms digital scale for 5.2 minutes. a) Find the current flowing b) the charges
Transferred with the given time.
4. What is the resistance of a conductor at 50° C if its resistance at 0°C is 1 ohm and the temperature coefficient
of resistance of 9.8 x 10-³/°C
5. A silver wire has a resistance of 2.3 at 0°C and a temperature coefficient of resistance of 3.75 x 10-³/°C.
What is final temperature when the final resistance is 3.8 ohms. ?
6. Complete the table:
Electric Circuit and Ohm's Law
V, Volts
8 volts
20 volts
10 Volts
36 volts
I, Ampere
2.8 mA
40A
130mA
R, ohms
156 02
25 ΚΩ
450 ΚΩ

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