Скачать или смотреть Time Constant in Charging and Discharging of a Capacitor | RC Circuit

In this video, we explain the concept of the Time Constant (
𝜏
=
𝑅
𝐶
τ=RC) in the charging and discharging of a capacitor.
👉 You will learn:

What is a time constant in an RC circuit.

The physical meaning of
𝜏
τ.

How fast or slow a capacitor charges/discharges.

Graphical explanation with exponential rise and decay.

Easy definition:

Charging → capacitor reaches 63% of maximum charge at
𝑡
=
𝜏
t=τ.

Discharging → capacitor falls to 37% of initial charge at
𝑡
=
𝜏
t=τ.

Important formulas for exams.

This lecture is specially designed for Class 12 Physics students.

⚡ Key Formulae:

Time Constant:
𝜏
=
𝑅
𝐶
τ=RC

Charging:
𝑄
(
𝑡
)
=
𝑄
0
(
1
−
𝑒
−
𝑡
/
𝑅
𝐶
)
Q(t)=Q
0
​

(1−e
−t/RC
)

Discharging:
𝑄
(
𝑡
)
=
𝑄
0
𝑒
−
𝑡
/
𝑅
𝐶
Q(t)=Q
0
​

e
−t/RC

📌 Watch till the end for the comparison and graphs!

📌 Timestamps

00:00 – Introduction
00:25 – RC Circuit Recap
01:00 – What is Time Constant (
𝜏
=
𝑅
𝐶
τ=RC)
02:00 – Units and Meaning of Time Constant
03:00 – Time Constant in Charging (63%)
04:30 – Time Constant in Discharging (37%)
06:00 – Graphs of Charging and Discharging with Time Constant
08:00 – Importance of Time Constant in Circuits
09:30 – Summary for Exams

📢 Caption (to show inside video at start)

“Time Constant (τ = RC) in Charging and Discharging of Capacitor | Physics Class 12”

🔖 Tags (for YouTube SEO)

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👉 Suggested Thumbnail Text:
⚡ “Time Constant Made Easy – 63% & 37% Rule | Class 12 Physics”