Hi there!
1.
Since the two resistors are in series, we can simply add:


2.
In series, the potential difference of each resistor (lamp) ADDS UP. We can begin by finding the current through the circuit using Ohm's law:

Plug in the values:

Now,
we can use Ohm's law to find the individual voltage for each lamp.
20 Ohm lamp:

5 Ohm lamp:

3.
To solve, we can use the power equation.

Plug in the values for each.
20 Ohm lamp:

5 Ohm lamp:

The derivative of the function space as a function of time is equal to a function of speed as a function of time.
The velocity vector is given by the vector sum of the velocities of both axes.

If you notice any mistake in my english, please let me know, because I am not native.
Answer:
because the wavelength of electron beams is much shorter than the wavelength of visible light
potential, kinetic, elastc energies
Explanation:
Given that,
(a) Work done by the electric field is 12 J on a 0.0001 C of charge. The electric potential is defined as the work done per unit charged particles. It is given by :



(b) Similarly, same electric field does 24 J of work on a 0.0002-C charge. The electric potential difference is given by :



Therefore, this is the required solution.