Asolenoid of radius 2.0 mm contains 100 turns of wire uniformly distributed over a length of 5.0 cm. it is located in air and carries a current of 2.0 a (i) using ampere's law, calculate the magnetic field strength b inside the solenoid 4 marks] (ii) draw a diagram clearly showing the direction of current flow in the solenoid and the direction of the magnetic field.

The magnetic field strength inside the solenoid is .

Explanation:

Given that,

Radius = 2.0 mm

Length = 5.0 cm

Current = 2.0 A

Number of turns = 100

(a). We need to calculate the magnetic field strength inside the solenoid

Using formula of the magnetic field strength

Using Ampere's Law

Where, N = Number of turns

I = current

l = length

Put the value into the formula

(b). We draw the diagram

Hence, The magnetic field strength inside the solenoid is .

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.