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The correct answer is
4. protons are positively charged.
In fact, the direction of the electric field of a charged particle depends on the sign of the charge of the particle. While a negatively charged particle (such as the electron) produces an electric field that points toward the charge, a positively charged particle (like a proton) produces an electric field that points away from the charge. This can be proofed by using a positive test charge: if we put a positive test charge near a proton, this test charge will move away from the proton (because it is repelled from it, since they have same charge), and the direction of its motion gives the direction of the electric field generated by the proton, so away from it.
4. protons are positively charged.
In fact, the direction of the electric field of a charged particle depends on the sign of the charge of the particle. While a negatively charged particle (such as the electron) produces an electric field that points toward the charge, a positively charged particle (like a proton) produces an electric field that points away from the charge. This can be proofed by using a positive test charge: if we put a positive test charge near a proton, this test charge will move away from the proton (because it is repelled from it, since they have same charge), and the direction of its motion gives the direction of the electric field generated by the proton, so away from it.
The electric field vectors point away from protons because protons are positively charged. Option 4 is the correct option.
What is electric field?
The electric field is the field, which is surrounded by the electric charged. The electric field is the electric force per unit charge.
When the two charges or the charged bodies interact each other, the force of attraction or repulsion acts between them. This force of attraction or repulsion can be find out using the coulombs law.
This force of attraction or repulsion is identified by the sign of the particular charge. According to the property of interacting charges-
- Like charges-For the like charges, when two charges interact to each other, then the charges repel each other.
- Unlike charges-For the unlike charges, when two charges interact to each other, then the charges attract each other.
A gravitational field vector points toward the earth; an electric field vector points toward an electron.
It is known that the charge of electron is negative. The electric filed vector is attracted towards the electron, this ,means the charge of it should be positive (unlike charge to electron to attract it).
Now this electric field vectors point away from protons, as this both become same or like charges (positive).
Thus, the electric field vectors point away from protons because protons are positively charged. Option 4 is the correct option.
Learn more about electric field here;
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