Consider the circuit in Figure 2. R= 10 =24 S1 x Figure 2. RC Circuit The batter
ID: 1874581 • Letter: C
Question
Consider the circuit in Figure 2. R= 10 =24 S1 x Figure 2. RC Circuit The battery is rated at 24 V but has a non-negligible internal resistance of 2 . Therefore, with nothing connected it has a voltage of 24 V but with a load attached it has a slightly lower voltage. At time t = 0 s, the switch S1 is closed. The permeability of free space = 4 x 10-3 Gm/A or Ho = 4 x 10-7 T·m/A. Q1 what is the current in the circuit at t = 0 s? A] At time t = 0 s, what is the strength of the magnetic field 1.5 cm from the wire at the point marked a on the picture? Note, only consider the current from wire segment between the points x and y.] Q2 B= t a into or out of the page At timet Q3Explanation / Answer
Q1) at t = 0, maximum current current flows in the ckt.
Io = V_battery/(r + R)
= 24/(2 + 10)
= 2.0 A
Q2) B = mue*Io/(2*pi*r)
= 4*pi*10^-7*2/(2*pi*0.015)
= 2.67*10^-5 T
Q3) into the page