A variable is a letter so just be like
13a or something like that
Answer: charge Q = 40Coulombs
Explanation: The current in a circuit is the quantity of charge that flows through it per second.
Here the 2amp current is same as the amount of charge in coulomb that flows through the terminal in ONE second.
So, if 2 coulomb of charge flows in 1sec then in 20 secs we will have
Q(charge) = 2*20 = 40 coulombs
Become more positive instead of negative
Answer:
λ = 5.734 x 10⁻⁷ m = 573.4 nm
Explanation:
The formula of the Young's Double Slit experiment is given as follows:

where,
λ = wavelength = ?
L = distance between screen and slits = 8.61 m
d = slit spacing = 1.09 mm = 0.00109 m
Δx = distance between consecutive bright fringes =
= 0.00453 m
Therefore,

<u>λ = 5.734 x 10⁻⁷ m = 573.4 nm</u>
The force between two parallel wires carrying currents in the same direction is attractive. It is repulsive if the currents are in opposite directions.