Electrical Engineering - Inductors - Discussion

Discussion Forum : Inductors - General Questions (Q.No. 14)
14.
The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
1.8 mV
18 mV
180 mV
1.25 mV
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
8 comments Page 1 of 1.

Yaganti eswar said:   3 years ago
Can you explain about resistance and inductance difference.

Chandini said:   6 years ago
Clearly said, thanks @Gangadhar.

Gangadhar said:   7 years ago
V = L * (di/dt) = (120 * 150)m * m =18000 m * m =18mv.
(1)

Vivek Singh said:   9 years ago
@Suryankya : your answer is right because we take all quantity in same before solving the problem.

John said:   9 years ago
@Suryankya.

The answer should be 0.018v, not 0.0018v.

Pavittar said:   10 years ago
Both are right.

Suryankya said:   1 decade ago
The inductance is 120 mH = 120*10^-3H.

The current is 150 mA/sec =150*10^-3A/sec.

V = L(di/dt).

= (120*10^-3)*(150*10^-3).

= 0.0018v.

S.Senbagarajan said:   1 decade ago
Given datas
The inductance is 120mH
The current is 150mA/s

V=L*(di/dt)
L=120*10^-3=0.120
V=0.120*150
so
V=18mV

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