Chọn phương ân đúng. Bón đó thị a, b, c, d ở Hinh 10.4 diễn...

Chọn phương ân đúng. Bón đó thị a, b, c, d ở Hinh 10.4 diễn tả sự phụ thuộc của đại lượng trên trục tung theo đại lượng trên trục hoành. (Các) trường hợp trong đó vật dẫn tuân theo định luật Ôm là : A. Hinh 10.4a. B. Hinh 10.4d. C. Hinh $10.4 \mathrm{c}$. D. Hinh 10.4b. a) GRAPH CAN'T COPY. b) GRAPH CAN'T COPY. c) GRAPH CAN'T COPY. d) GRAPH CAN'T COPY.

Chọn phương ân đúng.
Bón đó thị a, b, c, d ở Hinh 10.4 diễn tả sự phụ thuộc của đại lượng trên trục tung theo đại lượng trên trục hoành. (Các) trường hợp trong đó vật dẫn tuân theo định luật Ôm là :
A. Hinh 10.4a.
B. Hinh 10.4d.
C. Hinh $10.4 \mathrm{c}$.
D. Hinh 10.4b.
a) GRAPH CAN'T COPY.
b) GRAPH CAN'T COPY.
c) GRAPH CAN'T COPY.
d) GRAPH CAN'T COPY.

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Key Concepts

Ohm's Law

Ohm's Law is a fundamental principle in electrical circuits stating that the current flowing through a conductor is directly proportional to the voltage applied across it, provided the temperature and other physical conditions remain constant. This means that the relationship between current and voltage can be expressed as a linear equation, where the slope (or constant of proportionality) is the inverse of the resistance.

Linear Proportionality in Graphs

A linear graph that represents a proportional relationship will be a straight line passing through the origin. In the context of Ohm’s Law, this type of graph indicates that as the independent variable (voltage) increases, the dependent variable (current) increases at a constant rate, reflecting a constant resistance in the circuit.

Graphical Representation of Physical Laws

Graphs are a powerful tool in physics because they visually depict the relationship between two variables. For laws like Ohm’s Law, the shape and characteristics of the graph—such as its straight line through the origin—provide important information about the uniform behavior of a system and allow for the determination of key parameters like resistance.

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