Answered: 1. A charge of 12 C passes through the…

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1. A charge of 12 C passes through the filament of a car headlamp bulb in 4 s. What is the current?

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter7: Electricity

Section: Chapter Questions

Problem 1MA: What does the term fibrillation mean in connection with heart function? Give two important causes of...

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Concept explainers

Microscopic view of current

In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the direction of the current is opposite to the flow.

Question

100%

1. A charge of 12 C passes through the filament of a car headlamp bulb in 4 s.
What is the current?
2. A current of 0,5 A flows for 20 s through a small electric motor. How much
charge has passed?
3. A current of 200 mA flows for 2 minutes. How much charge has passed?

B. Calculate the following Problems. Show your solution.
1. A charge of 12 C passes through the filament of a car headlamp bulb in 4 s.
What is the current?
2. A current of 0,5 A flows for 20 s through a small electric motor. How much
charge has passed?
3. A current of 200 mA flows for 2 minutes. How much charge has passed?

4. Solve and complete the given table. Show your solution.
Charge
Current
Time
1.
60 C
3s
2 A
10 A
2.
2 minutes
3.
150C
4.
0.15 C
3s
5.
0.50 A
25 s
C. Describe in a creative way the effect of temperature increases on the resistance of
a metallic conductor.
Also, describe the ability of the material to conduct current in terms of its resistivity and
conductivity.
Note: You may express your answer through a drawing, just by making a slogan or a
poster, or a "hugot". It is all up to you as long as you can describe.

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