Question

In: Physics

Q1/ The current in an RL circuit builds up to one-third of its steady-state value in...

Q1/ The current in an RL circuit builds up to one-third of its steady-state value in 6.25 s. Find the inductive time constant.

Q2/ A coil is connected in series with a 14.3 kΩ resistor. An ideal 48.4 V battery is applied across the two devices, and the current reaches a value of 2.37 mA after 4.78 ms. (a) Find the inductance of the coil. (b) How much energy is stored in the coil at this same moment?

Solutions

Expert Solution

SOLUTION:

Q-1)

t= 6.25 s

Lets the inductive time constant.=

we know that

ANSWER = 15.41 s

Q2)

a) R =14.3 =14.3*103

V= 48.4 V

I= 2.37 mA =2.37*10-3 A

t = 4.78*10-3 s

we know the formula of

then L= the inductance of the coil.

we're applying this inductance formula

the inductance of the coil. IS = 56.74 H

AND

b) The energy is stored in the coil at this same moment E

genius_generous answered 1 year ago

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