What is Electric Field? Definition, Formula and NEET Explanation

Direct Answer

Electric field at a point is the force experienced by a unit positive test charge placed at that point.

It shows how strongly an electric charge can influence the space around it.

Definition of Electric Field

Electric field is defined as the force acting per unit positive test charge.

Formula:

E = F / q

Where:

E = electric field

F = force on test charge

q = magnitude of test charge

SI Unit of Electric Field

The SI unit of electric field is Newton per Coulomb (N/C).

It can also be written as Volt per meter (V/m).

Easy Explanation (Hinglish)

Maan lo ek charged object rakha hai.

Uske aas-paas ka area jahan koi bhi charge force feel kare, us area ko electric field kehte hain.

Agar charge zyada strong hai, electric field zyada strong hogi.

Agar distance badh jata hai, electric field kam ho jati hai.

Electric field ki direction hamesha batati hai ki positive test charge par force kis direction mein lagegi.

Electric Field Due to a Point Charge

Agar ek point charge Q ho aur hum r distance par ho, toh electric field ka formula hota hai:

E = (1 / 4πϵ₀) × (Q / r²)

Important points:

Distance double hone par electric field 4 times kam ho jati hai.

Charge double hone par electric field double ho jati hai.

Exam Relevance

Class 12 Boards: definition, unit, basic numericals

NEET: concept based and formula based questions

JEE: direction, vector nature, and applications

Electric field electrostatics ka very important topic hai.

Common Mistakes Students Make

Electric field aur force ko same samajhna

Direction galat lena

Distance square ko bhool jana

One Line Takeaway

Electric field batata hai ki koi charge apne aas-paas space ko kitna affect karta hai.

FAQ (Use Wix FAQ Block – Do NOT paste here)

Question 1: What is electric field in simple words?

Answer: Electric field is the area around a charge where another charge feels force.

Question 2: Is electric field a vector quantity?

Answer: Yes, electric field has both magnitude and direction.

Question 3: What is the SI unit of electric field?

Answer: Newton per coulomb (N/C).

Question 4: Which exams ask electric field?

Answer: Class 12 Boards, NEET and JEE.

For Boards, NEET, and JEE Physics doubts explained from basics to exam level, explore Quantum Rishi Physics GPT for clear, concept-based answers.