When the voltage is turned on and the droplet either rises or falls, the type of forces which are acting on the droplet are:
1) Gravitational force,
2) Electrical repulsion
<span>When the drop rises, it means that the upward electrical force is acting on it and a gravitational force is acting in downward direction. But in this case, the upward electrical force will be greater than the downward gravitational force.</span>
It is a seismograph that would be most useful.
K = ∆F / ∆s = 4N / 0.08m = 50N/m
Answer:
sine the resistors are connected in series, we could add the sum and that single value replaces the individual resistors in series. therefore, 100ohm resistor can do.
