Electricity and magnetism question

[benji]

I'm having trouble starting this problem... I'm pretty sure I'll be able to figure it out if I can just get past the first question.

I scanned the sheet because I'm lazy and I thought that you'd be able to understand the problem better that way anyways.

So if someone could just point me in the right direction (which way to go about this problem and why) and I think I'll be set.

Here's the sheet:

http://img12.exs.cx/img12/7502/physicsproblem8zr.gif

 

[Andrew Mason]

I'm having trouble starting this problem... I'm pretty sure I'll be able to figure it out if I can just get past the first question.

I scanned the sheet because I'm lazy and I thought that you'd be able to understand the problem better that way anyways.

So if someone could just point me in the right direction (which way to go about this problem and why) and I think I'll be set.

The electric force on the drop is upward and equal to its weight. Work out the force from the electric field (ie. E = force/unit charge).

The rest is pretty basic.

AM

 

[thepatientmental]

Hi there,

I can definitely understand your frustration with starting a problem in electricity and magnetism. It can be a challenging subject, but with some guidance, I'm sure you'll be able to figure it out.

Looking at the problem on the sheet, it seems like you are dealing with a circuit with a battery, resistor, and an inductor. The first step would be to identify the given values for each component and write them down. Then, you can use Ohm's Law (V=IR) to find the current in the circuit.

Next, you can use the equation for the voltage drop across an inductor (V=Ldi/dt) to find the inductor's current. From there, you can use Kirchhoff's loop rule to find the voltage drop across the resistor.

Remember to pay attention to the direction of the current and voltage in the circuit, as it will affect your calculations. Also, make sure to use the correct units for each quantity.

I hope this helps point you in the right direction. Let me know if you have any further questions or need more clarification. Good luck!