NEET > Additional Study Material for NEET > L 1 Electric field - Introduction ,Electrostatics, Physics , Class 12
L 1 Electric field - Introduction ,Electrostatics, Physics , Class 12 Video Lecture - Additional Study Material for NEET
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FAQs on L 1 Electric field - Introduction ,Electrostatics, Physics , Class 12 Video Lecture - Additional Study Material for NEET
| 1. What is an electric field? |  |
Ans. An electric field is a region in which an electric charge experiences a force. It is created by electric charges and can be either positive or negative. The strength and direction of the electric field are determined by the magnitude and distribution of the charges.
| 2. How is the electric field calculated? | |
Ans. The electric field at a point in space is calculated by dividing the force experienced by a positive test charge placed at that point by the magnitude of the test charge. Mathematically, the electric field (E) is given by E = F/q, where F is the force experienced by the test charge and q is the magnitude of the test charge.
| 3. What is the relationship between electric field and distance? | |
Ans. The electric field strength decreases as the distance from the source charge increases. The relationship between electric field (E) and distance (r) is inversely proportional. This means that as the distance doubles, the electric field strength reduces to one-fourth of its initial value.
| 4. Can an electric field be zero? | |
Ans. Yes, an electric field can be zero at certain points in space. This occurs when the net force experienced by a positive test charge placed at that point is zero. These points are called neutral points or equipotential points, where the electric field vectors cancel each other out.
| 5. How does an electric field affect charged particles? | |
Ans. Charged particles experience a force when placed in an electric field. The direction of the force depends on the charge of the particle. Positive charges experience a force in the direction of the electric field, while negative charges experience a force in the opposite direction. The magnitude of the force is determined by the charge of the particle and the strength of the electric field.
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