The effect of electric shock on human body depends on which of the following

current
voltage
duration of contact
all of the above

The correct answer is D. all of the above.

The effect of electric shock on human body depends on the following factors:

  • Current: The current is the flow of electricity through the body. The higher the current, the greater the damage to the body.
  • Voltage: The voltage is the difference in electrical potential between two points. The higher the voltage, the greater the current that will flow through the body.
  • Duration of contact: The longer the duration of contact with the electrical source, the greater the damage to the body.
  • Path of current through the body: The path of the current through the body can affect the severity of the injury. For example, a current that passes through the heart can cause ventricular fibrillation, which can be fatal.
  • Individual susceptibility: Some people are more susceptible to electric shock than others. This can be due to factors such as age, health, and body weight.

The severity of an electric shock can range from mild to severe, and can even be fatal. Symptoms of electric shock can include:

  • Pain
  • Burns
  • Muscle contractions
  • Cardiac arrest
  • Respiratory arrest
  • Death

If you are exposed to an electric shock, it is important to seek medical attention immediately.