(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I have this question. If I can get that formula, I will be able to solve it! :)

Here is the question:

The current in a 51 mH inductor changes with time as I = b t^{2}− a t. With a = 20 A/s and b = 7 A/s^{2}, find the magnitude of the induced emf, |E|, at t = 1.2 s. Answer in units of V.

E = Emf

2. Relevant equations

This is what I need to know! :)

3. The attempt at a solution

I am guessing that I will have to differentiate the equation. Please help! :)

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: What is a formula for ENF that relates I (current) and H (Henry) ?

**Physics Forums | Science Articles, Homework Help, Discussion**