Taking R = 1.00 k Ω and ∑ 250 V in Figure P28.25, determine the direction and magnitude of the current in the horizontal wire between a and e.

Question

google this to find picture

Answer 1

Google what? What does the ∑ symbol represent?

We need the picture to make sense of your question

Answer 2

picture
webassign . net/pse/p28-23.gif
The ∑ symbol is just epsilon for the voltage in the picture

Answer 3

∑ is sigma not epsilon. Sigma represents the sum. ε is the symbol for epsilon, which represents the voltage.