# Consider a 1.8 meter long charged rod with total charge of +4. 1.8 m Q =...

###### Question:

Consider a 1.8 meter long charged rod with total charge of +4. 1.8 m Q = +4 uc 20 cm P 30 cm a) Setup the integral needed to calculate the electric potential at location P. Specify integral limits and expressions or values for and, but do not evaluate the integral. b) What is the physical meaning of da? c) Why do we need to use an integral to calculate electric potential for this problem, why can't we just use V=k Q/r?

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