Electric Potential and Current

Presentation

•

Science

•

11th - 12th Grade

•

Medium

•

NGSS

HS-PS3-5, HS-PS2-5, HS-PS3-2

Standards-aligned

Robert Oliver

Used 12+ times

FREE Resource

25 Slides • 21 Questions

Electric Potential

By Mr. Oliver

How did the balloon get a negative charge?

When the balloon was brought near the can, what happened inside of the can?

Why did the can chase the balloon?

Multiple Choice

An object becomes charged when the atoms in the object gain or lose

electrons

protons

neutrons

all of the above

Multiple Choice

If you rub a glass rod with a piece of silk, the rod becomes positively charged. This means that

friction destroyed electrons in the rod.

the silk has become negatively charged.

protons have moved to the rod.

glass attracts more protons.

Multiple Choice

If you bring a charged object near an electrically neutral surface without allowing the object to touch the surface, the charges in the surface are rearranged by

friction.

convection.

induction.

conduction.

Multiple Choice

Objects that have opposite charges

are attracted to each other, and the force between the objects pulls them together.

are attracted to each other, and the force between the objects pushes them apart.

are repelled by each other, and the force between the objects pulls them together.

are repelled by each other, and the force between the objects pushes them apart.

Any questions before we move on?

What is the unit of charge?

What is the unit of energy?

What new unit were we given?

It's Joules/Coulomb

Multiple Choice

Units of energy (KE, PE, EE)

kg m/s

m/s²

Multiple Choice

What are the proper units for an amount of charge?

volts

ohms

amps

coulombs

Multiple Choice

What are the proper units for a potential difference, equal to Joules/Coulomb?

volts

ohms

amps

watts

It may be easier to think about gravitational potential energy.

Multiple Choice

How could you increase the gravitational potential energy of an object without changing its mass and gravity?

Make the object larger

Lower the object towards the ground

Raise the object farther off the ground

Allow the object to roll on the ground

When we talk about electrical potential we always assume a positive charge unless told otherwise.

A charge in the middle would move in what direction?

When we talk about electrical potential we always assume a positive charge unless told otherwise.

Where would a positive charge have more potential energy?

A or B

Multiple Choice

The direction of electric field lines shows the

direction of the force on a test positive charge.

size of the field.

strength of the field.

all of the above

Multiple Choice

As a proton moves in the direction the electric field lines...

it is moving from low potential to high potential and gaining electric potential energy.

it is moving from low potential to high potential and losing electric potential energy.

it is moving from high potential to low potential and gaining electric potential energy.

it is moving from high potential to low potential and losing electric potential energy.

Multiple Choice

Electric potential between positive charges ____________ as distance increases.

Increases

Decreases

Remains Constant

Is 0

Multiple Choice

1 Volt =

1 Joule Coulomb

1 Joule per Coulomb

1 Amp Coulomb

1 Amp per Coulomb

Multiple Choice

Voltage is also known as potential difference. Define potential difference

The amount of energy per charge

The amount of charge per energy

The amount of charge per second

The amount of voltage per second

Multiple Choice

Calculate the potential difference if the work done by 10 C of charge is 50 J

500 V

5 V

0.5 V

Multiple Choice

One AA battery produces how many volts?

1500 V

1.5 V

Why is copper often used as wire?

Static electricity stays in place. What is moving electricity called?

What is the unit of current?

Multiple Choice

What is current measured in?

Ω (Ohms)

V (Volts)

A (Amps)

W (Watts)

Multiple Choice

Current is...

moving protons

moving electrons

measured in volts

measured in ohms

What is the "push" in the video that will get electrons flowing in a wire?

What's the difference between an open and closed circuit?

Multiple Choice

Voltage is simply defined as...

what 'pushes' electrons

what 'stops' electrons

moving electrons

Multiple Choice

this circuit is .....?

open

parallel

closed

The cutest little circuit evah!

What direction does electricity flow?

Multiple Choice

By convention, current is defined as flowing from ______________ to ______________.

positive, negative

positive, positive

negative, positive

negative, negative

Multiple Choice

What do the arrows in the circuit represent?

conventional current flow

electron flow

voltage

resistance

Electric Potential

By Mr. Oliver

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