Q14. A very long solenoid has 800 turns per unit length. A current of 1.6 A flows through it. Then t

Q: What is the correct answer for CUET UG Physics Q14?

The correct answer is a. For a very long solenoid, the magnetic induction (B) at any point on its axis, especially in the middle, is given by the formula B = μ₀nI.Where:μ₀ (permeability of free space) = 4π × 10⁻⁷ T·m/An (number of turns per unit length) = 800 turns/mI (current) = 1.6 AB = (4π × 10⁻⁷ T·m/A) * (800 turns/m) * (1.6 A)B = 4 * 3.14159 * 10⁻⁷ * 800 * 1.6 TB ≈ 1608.49 × 10⁻⁶ T ≈ 1.608 × 10⁻³ T ≈ 16.08 × 10⁻⁴ T.A

Q: Q14. A very long solenoid has 800 turns per unit length. A current of 1.6 A flows through it. Then the magnetic induction in the middle of the solenoid on its axis is approximately: (a) 16 x 10-4…

The correct answer is a. For a very long solenoid, the magnetic induction (B) at any point on its axis, especially in the middle, is given by the formula B = μ₀nI.Where:μ₀ (permeability of free space) = 4π × 10⁻⁷ T·m/An (number of turns per unit length) = 800 turns/mI (current) = 1.6 AB = (4π × 10⁻⁷ T·m/A) * (800 turns/m) * (1.6 A)B = 4 * 3.14159 * 10⁻⁷ * 800 * 1.6 TB ≈ 1608.49 × 10⁻⁶ T ≈ 1.608 × 10⁻³ T ≈ 16.08 × 10⁻⁴ T.A

Q: What are the options for this CUET UG Physics question?

A. 16 x 10-4 T · B. 8 x 10-4 T · C. 32 x 10-4 T · D. 4 x 10-4 T

Question

Q14. A very long solenoid has 800 turns per unit length. A current of 1.6 A flows through it. Then the magnetic induction in the middle of the solenoid on its axis is approximately:
(a) 16 x 10-4 T
(b) 8 x 10-4 T
(c) 32 x 10-4 T
(d) 4 x 10-4 T

FirstInTest · Accepted Answer

For a very long solenoid, the magnetic induction (B) at any point on its axis, especially in the middle, is given by the formula B = μ₀nI.Where:μ₀ (permeability of free space) = 4π × 10⁻⁷ T·m/An (number of turns per unit length) = 800 turns/mI (current) = 1.6 AB = (4π × 10⁻⁷ T·m/A) * (800 turns/m) * (1.6 A)B = 4 * 3.14159 * 10⁻⁷ * 800 * 1.6 TB ≈ 1608.49 × 10⁻⁶ T ≈ 1.608 × 10⁻³ T ≈ 16.08 × 10⁻⁴ T.Approximating to the closest option, B ≈ 16 × 10⁻⁴ T.

Answer

16 x 10-4 T

Answer

8 x 10-4 T

Answer

32 x 10-4 T

Answer

4 x 10-4 T

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