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?

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

OR

genius_generous answered 2 years ago

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