Unit 12 Test - Electric Forces

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Mr. Hermes Instructor

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1. If you scuff electrons off the rug and onto your feet while walking across a rug, are you negatively or positively charged.

Negatively Charged

Positively Charged

Neutrally Charged

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2. Coulomb's Law of electricity is almost identical to Newton's Law of gravity. What happens to these forces as the distance is increased?

The force between them gets weaker

The force between them gets stronger

The force between them stays the same

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3. The vector arrows of an energy field point from particle A to particle B. What is the charge of particle A?

Particle A is negatively charged.

Particle A is positively charged.

Particle A is a neutral particle.

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4. A conductor and an insulator are rubbed together. Which object will gain an electron and become negatively charged?

The conductor will become negatively charged.

The insulator will become negatively charged.

The charges on both objects will average out and become neutral.

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5. Ohm's Law states that:

I=VR

V=IR

R=IV

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6. What is the resistance of an electric frying pan that draws 12 amps of current when connected to a 120-volt circuit?

12/120 = .1 ohms

120/12 = 10 ohms

12(120) = 1440 ohms

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7. What is Resistance?

Flow of electrons

Force driving flow of electrons

Force opposing the flow of electrons

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7. What is Current?

Force driving flow of electrons

Force opposing the flow of electrons

Flow of electrons

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7. What is Voltage?

Flow of electrons

Force driving flow of electrons

Force opposing the flow of electrons

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8. A battery is an example of what type of current?

Direct Current (DC)

Alternating Current (AC)

Batterie Current (BC)

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9. In a Series Circuit, what is the potential difference across all of the components?

Same across all components.

Shared across all components

Sum of all components

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10. In a Parallel Circuit, what happens to the total Resistance of a circuit when we add more components in parallel?

The Resistance is Greater

The Resistance is Lower

The Resistance Remains the Same

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