00:01
All right, suppose we have a solenoid like this, where the wire comes in this way, or the current comes in this way, and then wraps around like this.
00:11
And let's see, we have a loop connected around it.
00:18
It's kind of hard to draw, but we have a resistor like this.
00:23
And anyway, our solenoid goes like this.
00:27
We wanna know if the coil has 130 turns, and the solenoid has a radius of 4 .7 centimeters, and the number of turns per meter is, i think, let's see, 200, or sorry, 26 ,000 turns per meter.
00:52
We wanna know what is the magnitude and direction of the induced current in the loop if this resistance is 12 ohms, and the current changes in the solenoid by 1 .9 amperes in a time of 0 .13 seconds...