CRACKNEETPhysics

NEET Electrostatics

For solved Question on Hemispheres Click Here :

open.substack.com/pub/crackneetphysics/p/electric-…

34 minutes ago | [YT] | 0

CRACKNEETPhysics

📘 𝐒𝐜𝐞𝐧𝐚𝐫𝐢𝐨 𝟏: 𝐍𝐂𝐄𝐑𝐓 𝐄𝐱𝐞𝐦𝐩𝐥𝐚𝐫 (𝐇𝐞𝐦𝐢𝐬𝐩𝐡𝐞𝐫𝐢𝐜𝐚𝐥 𝐒𝐡𝐞𝐥𝐥)

𝐐𝐮𝐞𝐬𝐭𝐢𝐨𝐧: 𝐀 𝐡𝐞𝐦𝐢𝐬𝐩𝐡𝐞𝐫𝐞 𝐢𝐬 𝐮𝐧𝐢𝐟𝐨𝐫𝐦𝐥𝐲 𝐜𝐡𝐚𝐫𝐠𝐞𝐝 𝐩𝐨𝐬𝐢𝐭𝐢𝐯𝐞𝐥𝐲. 𝐓𝐡𝐞 𝐞𝐥𝐞𝐜𝐭𝐫𝐢𝐜 𝐟𝐢𝐞𝐥𝐝 𝐚𝐭 𝐚 𝐩𝐨𝐢𝐧𝐭 𝐨𝐧 𝐚 𝐝𝐢𝐚𝐦𝐞𝐭𝐞𝐫 𝐚𝐰𝐚𝐲 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐜𝐞𝐧𝐭𝐫𝐞 𝐢𝐬 𝐝𝐢𝐫𝐞𝐜𝐭𝐞𝐝:

(𝐚) 𝐩𝐞𝐫𝐩𝐞𝐧𝐝𝐢𝐜𝐮𝐥𝐚𝐫 𝐭𝐨 𝐭𝐡𝐞 𝐝𝐢𝐚𝐦𝐞𝐭𝐞𝐫

(𝐛) 𝐩𝐚𝐫𝐚𝐥𝐥𝐞𝐥 𝐭𝐨 𝐭𝐡𝐞 𝐝𝐢𝐚𝐦𝐞𝐭𝐞𝐫

(𝐜) 𝐭𝐢𝐥𝐭𝐞𝐝 𝐭𝐨𝐰𝐚𝐫𝐝𝐬 𝐭𝐡𝐞 𝐝𝐢𝐚𝐦𝐞𝐭𝐞𝐫

(𝐝) 𝐭𝐢𝐥𝐭𝐞𝐝 𝐚𝐰𝐚𝐲 𝐟𝐫𝐨𝐦 𝐭𝐡𝐞 𝐝𝐢𝐚𝐦𝐞𝐭𝐞𝐫

36 minutes ago | [YT] | 0

CRACKNEETPhysics

📘 NCERT Exemplar: Electrostatics Problem 1.25

Question: Five charges, 𝒒 each are placed at the corners of a regular pentagon of side '𝒂' (Fig. 1.12).

(a) (i) What will be the electric field at 𝑶, the centre of the pentagon?

(ii) What will be the electric field at 𝑶 if the charge from one of the corners (say 𝑨) is removed?

(iii) What will be the electric field at 𝑶 if the charge 𝒒 at 𝑨 is replaced by –𝒒?


(b) How would your answer to (a) be affected if the pentagon is replaced by an 𝒏-sided regular polygon with charge 𝒒 at each of its corners?

Answer Fully Solved :- https://youtu.be/F2Gg-zRRXwk?si=F620H...

Free Study Material : crackneetphysics.substack.com/

1 hour ago | [YT] | 0

CRACKNEETPhysics

🧠 NEET Logic Challenge: Alkanes (Conformations & Mechanisms)-Sawhorse and Newman projections-NEET Chemistry

Instructions:

(a) Both Α and R are true and R is the correct explanation of Α.

(b) Both Α and R are true but R is NOT the correct explanation of Α.

(c) Α is true but R is false.

(d) Α is false but R is true.

(e) Both Α and R are false.

Assertion (Α): Iodination of alkanes is carried out in the presence of oxidizing agents like ΗΝΟ₃.

Reason (R): Iodine is the most reactive halogen among the group 17 elements.

11 hours ago | [YT] | 3

CRACKNEETPhysics

🧠 NEET Chemistry Logic Challenge: Assertion & Reasoning (Hormones)-UNIT 19: BIOMOLECULES

Instructions:

(a) Both Α and R are true and R is the correct explanation of Α.

(b) Both Α and R are true but R is NOT the correct explanation of Α.

(c) Α is true but R is false.

(d) Α is false but R is true.

(e) Both Α and R are false.

Assertion (Α): Hormones are required in large dietary quantities to maintain cellular homeostasis.


Reason (R): Glucagon is a hormone that acts to lower blood glucose levels instantaneously.

11 hours ago | [YT] | 2

CRACKNEETPhysics

UNIT 2: ATOMIC STRUCTURE-Ψ and Ψ² -with r for 1s and 2s orbitals NEET CHEMISTRY

An orbital is a 3D region of high probability (usually 90-95%).

12 hours ago | [YT] | 0

CRACKNEETPhysics

NEET Chemistry -UNIT 2: ATOMIC STRUCTURE

At a Radial Node, what are the values of Ψ and Ψ² respectively?


A) Ψ = 1, Ψ² = 1

B) Ψ = 0, Ψ² = 0

C) Ψ = negative, Ψ² = positive

D) Ψ = maximum, Ψ² = zero

12 hours ago | [YT] | 2

CRACKNEETPhysics

🔥 𝐃𝐨𝐧'𝐭 𝐉𝐮𝐬𝐭 𝐒𝐭𝐮𝐝𝐲, 𝐒𝐞𝐥𝐞𝐜𝐭! 🔥

Are you tired of confusing 𝐏𝐨𝐭𝐞𝐧𝐭𝐢𝐨𝐦𝐞𝐭𝐞𝐫/Meter Bridge/Wheatstone circuits? Do you want to solve numerical in under 𝟑𝟎 seconds?

🚀 𝐂𝐋𝐈𝐂𝐊 𝐇𝐄𝐑𝐄 to access:

open.substack.com/pub/crackneetphysics/p/concepts-…

✅ 𝟐𝟎+ True/False .
✅ 𝐒𝐞𝐥𝐞𝐜𝐭𝐢𝐨𝐧 𝐖𝐚𝐥𝐥𝐚 20 Fill in the Blanks .
✅ Reasoning and Assertion Questions
✅ 𝐄𝐱𝐜𝐥𝐮𝐬𝐢𝐯𝐞 Quick Revision Notes for Current Electricity & Much More .

👉 Join the Selection Walla community and turn your hard work into a Top Rank! 🎯

21 hours ago | [YT] | 4

CRACKNEETPhysics

📘 𝐖𝐡𝐞𝐚𝐭𝐬𝐭𝐨𝐧𝐞 𝐁𝐫𝐢𝐝𝐠𝐞: 𝐀𝐬𝐬𝐞𝐫𝐭𝐢𝐨𝐧 & 𝐑𝐞𝐚𝐬𝐨𝐧𝐢𝐧𝐠 𝐂𝐡𝐚𝐥𝐥𝐞𝐧𝐠𝐞

𝐃𝐢𝐫𝐞𝐜𝐭𝐢𝐨𝐧𝐬:

(𝐀) Both 𝐀 and 𝐑 are true, and 𝐑 is the correct explanation of 𝐀.
(𝐁) Both 𝐀 and 𝐑 are true, but 𝐑 is 𝐍𝐎𝐓 the correct explanation of 𝐀.
(𝐂) 𝐀 is true, but 𝐑 is false.
(𝐃) 𝐀 is false, but 𝐑 is true.


𝐀𝐬𝐬𝐞𝐫𝐭𝐢𝐨𝐧 (𝐀): In an unbalanced Wheatstone Bridge, the central branch resistor cannot be ignored during equivalent resistance calculations.

𝐑𝐞𝐚𝐬𝐨𝐧 (𝐑): Kirchhoff’s Voltage Law (𝐊𝐕𝐋) states that the sum of potential drops in any closed loop must be zero.

21 hours ago | [YT] | 2

CRACKNEETPhysics

UNIT 12: CURRENT ELECTRICITY 🧠 Tricky Question: Wheatstone Bridge Concepts-NCERT 3.13 WHEATSTONE BRIDGE

Assertion (A): An electrical circuit consisting of four resistors arranged in a diamond shape is considered a Wheatstone bridge only if the galvanometer shows zero deflection.

Reason (R): The balanced state is a specific condition of the bridge where the potential difference across the galvanometer terminals is zero.

Select the correct option:

(1) Both (A) and (R) are True, and (R) is the correct explanation of (A).

(2) Both (A) and (R) are True, but (R) is NOT the correct explanation of (A).

(3) (A) is True, but (R) is False.

(4) (A) is False, but (R) is True.

Video Solution : https://youtu.be/hQ6TPA14qe8

Detailed Wheatstone Bridge Theory :- youtube.com/live/bP3uE3FwZ1k?si=SSrRZokF0h4WCdnw

22 hours ago | [YT] | 0