Asolenoid 81.0 cm long has a radius of 1.70 cm and a winding of 1300 turns; it carries a current of 3.60 a. calculate the magnitude of the magnetic field inside the solenoid.

The magnitude of the magnetic field inside the solenoid is .

Explanation:

Given that,

Length = 81.0 cm

Radius = 1.70 cm

Number of turns = 1300

Current = 3.60 A

We need to calculate the magnetic field

Using formula of magnetic field inside the solenoid

Where, =Number of turns per unit length

I = current

B = magnetic field

Put the value into the formula

Hence, The magnitude of the magnetic field inside the solenoid is .

asthenosphere and convection

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27