Question

Figure Part C Consider the juncion of three wires as shown in the diagram. (Figure 1) Wire 1 Wire 2 Wire 3 <1 of 1 magnitudes of the current density and the diameters for wires 1 and 2 are given in the table. The current directions are indicated by the arrows. Wire Current density (A/mm²) Diameter (mm) 1 3.4 2.1 2 4.1 3.3 Part A Find the current $I_3$ in wire 3. Express your answer in amperes to two significant figures. Call current out of the junction positive and current into the junction negative. View Available Hint(s) ??? $I_3 = (-13)$ A Submit Previous Answers Incorrect; Try Again; 4 attempts remaining A person with body resistance between his hands of 13 k$\Omega$ accidentally grasps the terminals of a 16 kV power supply. If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in the above situation to be $I_{max} = 1.0\text{ mA}$ or less? Express your answer with the appropriate units. Value Units Submit Request Answer Part A If the internal resistance of the power supply is 1900 $\Omega$, what is the current through the person's body? Express your answer with the appropriate units. $I = $ Value Units Submit Request Answer Part B What is the power dissipated in his body? Express your answer with the appropriate units. $P = $ Value Units Submit Request Answer

          Figure
Part C
Consider the juncion of three wires as shown in the diagram. (Figure 1)
Wire 1
Wire 2
Wire 3
<1 of 1
magnitudes of the current density and the diameters for wires 1 and 2 are given in the table. The current directions are indicated by the arrows.
Wire
Current density
(A/mm²)
Diameter
(mm)
1
3.4
2.1
2
4.1
3.3
Part A
Find the current $I_3$ in wire 3.
Express your answer in amperes to two significant figures. Call current out of the junction positive and current into the junction negative.
View Available Hint(s)
???
$I_3 = (-13)$
A
Submit
Previous Answers
Incorrect; Try Again; 4 attempts remaining
A person with body resistance between his hands of 13 k$\Omega$ accidentally
grasps the terminals of a 16 kV power supply.
If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in the above situation to be
$I_{max} = 1.0\text{ mA}$ or less?
Express your answer with the appropriate units.
Value
Units
Submit
Request Answer
Part A
If the internal resistance of the power supply is 1900 $\Omega$, what is the current through the person's body?
Express your answer with the appropriate units.
$I = $
Value
Units
Submit
Request Answer
Part B
What is the power dissipated in his body?
Express your answer with the appropriate units.
$P = $
Value
Units
Submit
Request Answer

Figure
Part C
Consider the juncion of three wires as shown in the diagram. (Figure 1)
Wire 1
Wire 2
Wire 3
<1 of 1
magnitudes of the current density and the diameters for wires 1 and 2 are given in the table. The current directions are indicated by the arrows.
Wire
Current density
(A/mm²)
Diameter
(mm)
1
3.4
2.1
2
4.1
3.3
Part A
Find the current I3 in wire 3.
Express your answer in amperes to two significant figures. Call current out of the junction positive and current into the junction negative.
View Available Hint(s)
???
I3 = (-13)
A
Submit
Previous Answers
Incorrect; Try Again; 4 attempts remaining
A person with body resistance between his hands of 13 kΩ accidentally
grasps the terminals of a 16 kV power supply.
If the power supply is to be made safe by increasing its internal resistance, what should the internal resistance be for the maximum current in the above situation to be
Imax = 1.0 mA or less?
Express your answer with the appropriate units.
Value
Units
Submit
Request Answer
Part A
If the internal resistance of the power supply is 1900 Ω, what is the current through the person's body?
Express your answer with the appropriate units.
I =
Value
Units
Submit
Request Answer
Part B
What is the power dissipated in his body?
Express your answer with the appropriate units.
P =
Value
Units
Submit
Request Answer

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