Question

Find an expression for the electric field E⃗ E→ at the center of the semicircle.
Hint: A small piece of arc length ΔsΔs spans a small angle Δθ=ΔsΔθ=Δs /R/R, where RR is the radius.

Express your answer in terms of the variables QQQ, LLL, unit vectors i^i^i_unit, j^j^j_unit, and appropriate constants.

E⃗ E→ =

5.65•1010QL2

SubmitPrevious AnswersRequest Answer

Incorrect; Try Again; 5 attempts remaining

Part B

Evaluate the field strength if LLvL = 10 cmcm and QQvQ = 50 nCnC .

Express your answer with the appropriate units.

EE =

nothingnothing

SubmitRequest Answer

Provide Feedback

Next

Answer 1