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Camera flashes charge a capacitor to high voltage by switching the current through an inductor on and off rapidly. In what time must the 0.100 A current through a 2.00 mH inductor be switched on or off to induce a 500 V emf?

$.4 \times 10^{-6} \mathrm{sec}$

Physics 102 Electricity and Magnetism

Chapter 23

Electromagnetic Induction, AC Circuits, and Electrical Technologies

Electromagnetic Induction

Cornell University

University of Michigan - Ann Arbor

University of Winnipeg

Lectures

11:53

In physics, a charge is a …

10:30

The electric force is a ph…

00:41

How fast can the 150 A cur…

01:00

An inductor is connected t…

05:27

A 1.00 -mH inductor and a …

02:07

A 10.0 -mH inductor carrie…

05:37

A $1.00-\mathrm{mH}$ induc…

01:08

A $2.00-\mathrm{H}$ induct…

01:28

06:12

A $20.0-\mu \mathrm{F}$ ca…

A 20.0 -\muF capacitor is …

02:24

The current in a 90.0 $\ma…

02:44

The current in a 90.0 -mH …

02:10

A $1.00-\mu F$ capacitor i…

02:14

A $10.0-\mathrm{mH}$ induc…

02:25

At the instant when the cu…

04:01

04:37

01:18

A $500 \mu$ H inductor is …

00:51

When the 20.0 A current th…

01:42

An $L C$ circuit consists …

01:34

If you wish to take a pict…

So here we know that the IMF Absalon is gonna be equaling the self inductive of the induct er multiplied by the change in the current divided by the change in time solving for the change in time, this would be equal to the self induction ce of the induct er times the change and current divided by the induced IMF. And so we can say that then the change in time would be equaling the self induct ins's of two times 10 to the negative Third Henry's or two Miller Henry's multiplied by 0.1 amps divided by 500 volts. And we find that the value of time required is four times 10 to the negative seventh seconds. This would be our final answer. That is the end of the solution. Thank you for watching

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