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RC Circuit and Current Conceptual Question Part A How does the current through R

ID: 1267222 • Letter: R

Question

RC Circuit and Current Conceptual Question

Part A

How does the current through R1 compare with the current through R2 immediately after the switch is first closed?

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ANSWER:

The current through R1  How does the current through  compare with the current through  immediately after the switch is first closed?

the current through R2.

Part B

How does the current through R1 compare with the current through R2 a very long time after the switch has been closed?

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ANSWER:

The current through R1  How does the current through  compare with the current through  a very long time after the switch has been closed?

the current through R2.

Part C

How does the current through R1 compare with the current through R2 immediately after the switch is opened (after being closed a very long time)?

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ANSWER:

The current through R1  How does the current through  compare with the current through  immediately after the switch is opened (after being closed a very long time)?

the current through R2.

is greater than is less than is equal to

Explanation / Answer

a)

BY Kirchhoff's Juction rule ,current through R1 is given by

IR1=IR2+Ic

so IR1>IR2

Answer :greater than.

b)

After Long time ,capacitor gets fully charged and no current flows through it i.e it acts as open circuit ,so

Current through R1 is

IR1=IR2

Answer:Equal to

c)

After switch is open ,resistor R1 and battery will be out of circuit ,so capacitor discharges through R2 .

IR1<IR2

Answer :Less than