# A solenoid with 475 turns has a length of 6.00 cm and a crosssectionalarea of 2.80 x 10-9 m2. Find (a) the solenoid’sinductance and (b) the average emf around the solenoid ifthe current changes from +2.00 A to 22.00 A in 8.33 x 10-3 s.

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A solenoid with 475 turns has a length of 6.00 cm and a crosssectional
area of 2.80 x 10-9 m2. Find (a) the solenoid’s
inductance and (b) the average emf around the solenoid if
the current changes from +2.00 A to 22.00 A in 8.33 x 10-3 s.

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Step 1

Let the number of turns in the coil be denoted by N, and let the length of the solenoid be denoted by l and let the area of cross section of the solenoid be denoted as A.

Step 2

The expression for the inductance L of the solenoid is defined as,

Step 3

Substitute 4π ×10-7 H/m for μo , 475 for N , 2.80×10-9 m2 for A, 6.00 cm f...

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