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 Q?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 2 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 :V, Volts8 volts20 volts10 Volts36 voltsI, Ampere2.8 mA40A130mAR, ohms156 Ω25 ΚΩ450 ΚΩ

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A certain light bulb has a resistance of 150 2 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

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

Path of Least Resistance

In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.

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 Q?
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 2 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 :
V, Volts
8 volts
20 volts
10 Volts
36 volts
I, Ampere
2.8 mA
40A
130mA
R, ohms
156 Ω
25 ΚΩ
450 ΚΩ

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