CBSE Class 12-science Answered
Which is more dangerous ac [6/3, 5:04 PM] Gautam: Okay
[6/3, 5:04 PM] Gautam: Bye
[6/3, 5:04 PM] Gautam: 😘😘😊or dc ?? Whose shock is repulsive?? Ac's or dc's??? Why???
Asked by upmaniousagarika | 19 Jul, 2016, 11:16: PM
Expert Answer
Effects of AC and DC Current on Human Body
- It should be learnt that both currents are equally lethal in high amounts for human body and proper care should be taken to avoid electric contact with the human body.
- Electric shock or electrocution occurs when a human body acts as a passage for the electric current.
- The actual effect may vary as the resistance provided by the body is more in dry condiction and decreases tremendously in wet or injured condition.
- Both AC and DC supply can give a severe electric shock to a person.
- The severity of the shock depends on the voltage-current-time product.
- DC current will make a single continuous contraction of the muscles thereby deliberately increasing the time of contact
- Whereas AC current will make a series of contractions depending on applied frequency.
- As the frequency is zero in DC, it requires higher voltage to harm or shock a human body as compared to AC.
- Hence in general perception it is belived that AC (due to the frequency) is more dangerous for human body as a comparitive smaller amount of voltage (with respect to DC) is sufficient to cause injury.
Answered by Abhijeet Mishra | 05 Dec, 2017, 02:12: PM
Concept Videos
-
AC Applied Across Resistor - Part 1
This video describes simple AC and DC circuits and advantages of AC circuit... -
Alternating EMFs
This video explains alternating emf connected to a resistor, finding curren... -
AC Applied Across Resistor - Exam Decoded
This video contains practice questions on AC voltage applied to a resistor.
CBSE 12-science - Physics
Asked by Selebagbi | 14 Dec, 2019, 09:35: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:42: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:43: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:48: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:53: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:58: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 08:59: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 09:00: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 09:07: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 09:12: AM
ANSWERED BY EXPERT
