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Physics

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Kara Wolf

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2y ago
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Cards in this guide (14)
When charging an object by conduction what happens to the charges in the object

Electrons move onto the object, giving it a static charge.

Apex ;)

During an inquiry activity You can use one or more of your five senses during an inquiry activity to make

observations

Which is true of magnetic field lines but not electric field lines

they show wich way iron shavings would align themselves

They always make closed loops.

Electric field lines can either form closed loops or they can start and finish on isolated electric charges. Magnetic field lines always only form closed loops.

How is the wiring done in houses and other occupied buildings

It is in parallel, so one light can be on while others are turned off.

Electric field lines point in the opposite direction charges would move if they were in the field

negative

The north pole of one magnet will attract the south pole of another magnet

True

Electric fields and magnetic fields are both present near a wire carrying current

true

What is true about voltage

A. It is measured in volts. B. It is related to current and resistance by Ohm's Law. D. It's what makes current flow in a circuit.

A it is an EMF it can exists in its form without performing any work

When electric and magnetic fields both exist it is called an

electromagnetic

When none of the magnetic domains in a material will stay aligned the material is called

not magentic

A 120 V power supply connected to a 30 ohm resistor will produce how many amps of current

A 120V power supply connected to a 30 Ohm resistor will produce 120/30 or 4 amps of current.

The current in a what circuit is the same at every point

The current in a series circuit is the same at every point.

A hospital has a back-up generator to power the medical devices in case of a power failurewhat is the most likely source of mechanical energy for the generator

gasoline or diesel fuel...apex

What will be attracted to or repelled by an magnet

a copper wire carrying current and another magnet.

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