Amplitude: the height of the wave<span>, measured in meters
</span><span>Wavelength: the distance between adjacent crests, measured in meters
</span>
The electric field across the plates is defined by
E = V / d .............. where V is the potential difference and d the distance that separates the plates.
E = 12 Volts/ 0.25 meters = 48 V/m
Answer:
d
Explanation:
The minimum energy configuration in electrostatics states that Charges always reside on the surface of a conductor. If anyhow they were inside, an electric field would exist inside and would act to move them to the surface,
Therefore, the drawing that shows where the charges reside when they are in equilibrium is a hollowed-out "hole" in the interior of the circle, with positive signs surrounding the exterior edge. This means that the d part is the correct answer.
9W 3V bulb need current flow
I = P/V = 9/3 = 3A
connected serially, voltage drop on the wire will be = Vsupply - 3(Vbulb) = 12 - 3(3) = 3V.
resistance of the wire ,with I=3 and V=3, = V/I = 3/3 = 1 Ohm.