Crowdly

the idea that electric charges can't exist alone

an area around a charged object that exerts an electric force on other charged objects

✅

the attraction or repulsion between electric charges

The conventional direction of electric field is ________

No specific direction

Direction cannot be determined

Positive to negative

✅

Negative to positive

An electric charge that results from the presence of a charged object nearby (no direct contact) is called

a static electric charge

a neutral charge

a proximal charge

an induced charge

100%✨

A neutral object is

attracted to either a negatively or a positively charged object

100%✨

attracted to positively charged objects only

attracted to negatively charged objects only

repelled by a negatively or a positively charged object

What happens when a positively charged rod is brought near a neutral plastic ball?

electrons in the ball are repelled to the far side of the plastic ball

electrons in the ball are attracted to the near side of the ball

the protons on the ball repelled by the positive rod and move to the far side of the ball

protons on the ball are attracted to the positive rod and move to the near side of the ball

A charge resulting from contact between objects is called

an electric discharge

induction

conduction

a contact charge

Which atomic particle carries a negative charge

neutron

proton

nucleus

electron

Match the following statements

Two sources are coherent

Condition for destructive interference pattern

Destructive interference produces

Condition for constructive interference pattern

Constructive

interference produces

If the length between two fixed points of a resonating string is L, and L= wavelength, then the standing waves is the

first harmonic

second harmonic

third harmonic

fourth harmonic

fifth harmonic

If you were to remove all the overtones from a sound,

you would be left with a tone of multiple frequencies.

you would be left with a pure tone.

you would hear no sound at all.