Answer:
initially- with positive potential differences - the current is directly proportional to the p.d. However, as the current through the filament increases, the heating effect caused in the lamp also increases and so the temperature of the filament rises. This increase in the filament's temperature also increases the resistance of the filament. As a result the rate of increase of the current decreases and a greater change in the potential difference is required to cause a change in the current. This can be seen on the curve as the gradient becomes more shallow (greater resistance). This same pattern is repeated when a negative potential difference is applied across the filament
Answer:
(D) all of the above
Explanation:
All of the choices describe matter.
A because he is putting three vitals on a hot plate
Answer:
The third image
Explanation:
The one with the thumb pointing to the right
