[填空题]
Calculate the current in the circuit of (Fttdn figy5l) k p5w4,d+ )d)u dd;y,coig. Below) and2oq ecv sd0k3r3x+o-n show that the sum of all the voltage changes aroukevc n-dr 0xso 32o+q3nd the circuit is zero.
I $\approx$ A(retain two decimal places)
$\sum$ V
