PLEASE HELP!!! URGENTTT
1 answer:
You might be interested in
Answer:
B. It increases the potential energy of electrical charges to produce a current.
Explanation:
Battery is a source of constant potential difference
When a charge is passed through the battery then its potential energy changes by
here we know that
= potential difference of battery
so as the charge is passing through the terminals of battery its potential energy is changed by above value.
Now by the conservation of energy principle we know that this change in potential energy will convert into kinetic energy of charge and then the flow of charge will produce current in the circuit.
So battery is used to maintain a constant current in the circuit by giving potential energy to the charge.
Energy is 4 * J
The rate of dissipation is 2 * W
In the question, it is given that
t = 20 s
R = 400 mm
L = 300 mm
where t, R, and L are time, radius, and length.
For magnetic energy density, the formula is
ηo = Energy / volume
= β^2 / 2 * μ
Now, substituting the values
= / 2 * 4 * Π *
= 1.59 * J / m^3
Now, energy is
= energy density * volume
= 1.59 * * Π * 0.5 *
= 4 * J
The rate of dissipation is
= Energy / time
= 4 * / 20
= 2 * W
For more information click on the link below:
# SPJ4