Author Question: What is Kirchhoffs 1st equation for this junction? a. I1 = I2 + I3 b. I2 = I1+ I2 ... (Read 28 times)

casperchen82 · **on:** Jul 28, 2018

What is Kirchhoffs 1st equation for this junction?

a.
I₁ = I₂ + I₃

b.
I₂ = I₁+ I₂

c.
I₃ = I₁ + I₂

d.
I₁ + I₂ + I₃ = 0

Question 2

A car travels north at 30 m/s for one half hour. It then travels south at 40 m/s for 15 minutes. The total distance the car has traveled and its displacement are:
a. 18 km; 18 km S.
b. 36 km; 36 km S.
c. 36 km; 36 km N.
d. 90 km; 18 km N.
e. 90 km; 36 km N.