In Fig. 18-17, what is the value of the current I_1? 0.61 A 0.32 A 0.29 A 0.89 A
ID: 1596261 • Letter: I
Question
In Fig. 18-17, what is the value of the current I_1? 0.61 A 0.32 A 0.29 A 0.89 A 0.11 A In Fig. 18-18, I = 0.65 A and R = 5 Ohm. What is the value of the emf E? 6.5 V 25 V 13 V 17 V 3.4 V A 8.0 mu F capacitor is connected in series with a 6.0 k Ohm resistor across a 20-V DC source and a switch. What is the time constant of this RC circuit? 12 ms 9.0 ms 48 ms 18 ms 40 ms My electric razor operates on 120. v and requires 3.0 Amperes. How much current comes out after delivering 360. watts of power? 40 A 2.4 A 1.2 A 3.0 A 0 AExplanation / Answer
10) A/c to circuit diagram,
We will use Kirchoff's equation and we will have three equations as follow:
=> 5I1 +6+10I2 = 12
=> 5I1+10I2 = 6 --- (1)
2nd eqn
=> 3I3+8-10I2=6
=> 3I3-10I2=-2 --- (2)
3rd Eqn
I1=I2+I3 --- (3)
Using eqn (3) in eqn (1), we get
15I2+5I3 = 6 --- (4)
Multiply eqn (4) by 3 and eqn (4) by 5
45I2+15I3 = 18
15I3-50I2=-10
and than subtracting we get,
95I2=28
=> I2=0.29 A
Using I2=0.29 A in eqn (2) and (3)
we get I3=0.95 A
and I1=0.61 A
A) is a right choice
11) Given, R =5 ohm, I = 0.65 A,
A/c to Kirchoff's law,
RI1+2RI=E
also I1=I+I=2I
=> E = 2RI+2RI
=> E = 4RI
=> E = 4* 5 *0.65
=> E = 13 V