Answer:
Explanation:
The electric force exerted on the electron is given by:
where
is the magnitude of the electron charge
E = 40000 V/m is the electric field
Substituting,
By comparison, the gravitational force exerted on the electron is:
where
is the mass of the electron
g = 9.8 m/s^2 is the acceleration due to gravity
Substituting,
It means that the potential difference between the metal can and the little button on top of the battery is about 1.5 volts.
That's strictly the result of the chemicals in the battery, and has nothing to do with its size. If a battery as big as a house has the same chemistry inside that the AA has, the big one will also have 1.5 volts between its terminals. (But it'll run your flashlight much longer than the AA will, before it runs down.)
Answer:
they stick together when they get close
98.4% of the power turns into heat.
If the bulb consumes 55 watts,
then it "wastes"
(0.984) x (55w) = 54.12 watts
