Along solenoid, of radius a, is driven by an alternating current, so that the field inside is sinusoidal: b(t) b cos(ot)ż. a circular loop of wire, of radius a/2 and resistance r, is placed inside the solenoid, and coaxial with it. find the current induced in the loop, as a function of time. 6.

The current induced in the loop is .

Explanation:

Given that,

Magnetic field

Radius

Resistance =R

We need to calculate the area of the loop

Using formula of area

Put the value of r in to the formula

We need to calculate the flux

Using formula of flux

We need to calculate the emf

Using formula of emf

We need to calculate the current

Using formula of current

Hence, The current induced in the loop is .

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards