A long solenoid is fabricated by closely winding a wire of radius… - Vidyadip

Question

A long solenoid is fabricated by closely winding a wire of radius 0.5mm over a cylindrical nonmagnetic frame so that the successive turns nearly touch each other. What would be the magnetic field B at the centre of the solenoid if it carries a current of 5A?

✓

Answer

r = 0.5mm, i = 5A,$\text{B}=\mu_0\text{ni}$ (for a solenoid)
Width of each turn $= 1 mm = 10^{-3}m$ No. of turns $\text{n}=\frac{1}{10^{-3}}=10^3$ So, $\text{B}=4\pi\times10^{-7}\times10^3\times5=2\pi\times10^{-3}\text{T}$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Question" from Magnetic Field due to a Current→Magnetic Field due to a Current — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

In the given progressive wave $\text{y}=5\sin(100\pi\text{t+0.4x})$ where y and x are in m, t is in s. What is the:Frequency

Do two distinct poles actually exist at two nearby points in a magnetic dipole?

Bridges are declared unsafe after long use. Why?

A girl is swinging if the girl starts steep swinging, what will be the effect on the period?

Why is a woman's voice sweeter than a man?

A person travelling at 43.2km/h applies the brake giving a deceleration of $6.0m/s^2$ to his scooter. How far will it travel before stopping?

Can a motion be periodic but not oscillatory? If your answer is yes, give an example and if not explain why?

A porter carried a box on the roof of a bus in 5 minutes. The second porter loaded the same box in 2 minutes. Which porter did more work?

What will be the angle formed between the directions of velocity and acceleration of the particle at the highest point of the path?

What is the angular velocity of minute hand of a clock?