(c31p54) In the diagram is shown an RL circuit with a switch. ? = 110.0 V, R1 =

Question

(c31p54) In the diagram is shown an RL circuit with a switch. ? = 110.0 V, R1 = 25.0 ?, R2 = 50.0 ? and L = 40.0 H. Find the values of i1, the current through resistor R1 and i2, the current through resistor R2, the current through the switch, the potential difference across R2, the potential difference across L and the rate of change of the current di2/dt in the time just after the closing of the switch.

1. What is i1 just after the switch is closed?

2. What is i2 just after the switch is closed?
3. What is the value of the current in the switch just after the switch is closed?

4. What is the the potential difference across R2 just after the switch is closed?

5. What is the the potential difference across L just after the switch is closed?

6. What is the rate of change of the current di2/dt in the time just after the closing of the switch?

7. What is i1 a long time after the switch is closed?

8. What is i2 a long time after the switch is closed?

9. What is the value of the current in the switch a long time after the switch is closed?

What is the the potential difference across R2 a long time after the switch is closed? . 10.

What is the the potential difference across L a long time after the switch is closed? 11.

What is the rate of change of the current di2/dt a long time after the closing of the switch? 12,

Explanation / Answer

(1) when the stich is just closed, inductor acts as an open circuit. so all the currebt flows through R1

i1= E/R1 =110/25 =4.4 A

(2)when the stich is just closed, inductor acts as an open circuit. so all the currebt flows through R1. so current i2=0

(3)current through switch= i1 = 4.4 A

(4) potential difference across R2 just after the switch = V= i2 R2

so V= 0(50) = 0 volts

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.