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☆☆☆☆☆A two-way speaker has two speaker cones built into one speaker assembly: one cone to generate lower-frequency sounds and one cone to generate higher-frequency sounds. The low-range speaker cone is larger, the high-range cone is smaller. In car speakers, the low-range speaker cone usually occupies most of the area of the speaker, and is made from a light-weight, paper-like material, sometimes painted black, sometimes gray. A three way speaker has three speaker cones built into the assembly, an additional cone for mid-range frequency sounds.
Electrons move onto the object, giving it a static charge.
Apex ;)
friction
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.
Yes, an electric current is the movement of negative charges called electrons.
false
true
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
electric force can act at a distance bbut is stronger when object are closer
not magentic
It is promoted by a scientist.
a copper wire carrying current and another magnet.
