# Need Help - Exam tomorrow

1. Feb 25, 2010

### matt4u

Need urgent Help - Exam tomorrow

1. The problem statement, all variables and given/known data

question 1: A 2.0 cm piece of wire with a linear charge density 4.0 micro C/m is bent into a quarter circle. a) what is magnitude and direction of the E-field at the center of the curvature? b) whats the distance from the wire to the center of the curvature?

question 2: A conical megaphone sits in a uniform electric field of strength 200N/C. a) if the megaphone is 1.00 m tall with the large hole measuring 0.50 m in diameter and the small hole measure 8.00 cm in diameter, what is the electric flux through the megaphone? b) what is the flux if it is tilted by 90 degrees?

2. Relevant equations

3. The attempt at a solution
1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution
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