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3:34 PM Thu 28 Apr < 5 (b) The image below outlines the body's response to a range of electrical currents. Threshold of sensation Severe burns and shock Threshold of pain Cannot let go Ventricular fibrillation and probable death 100 μA 10 A I mA 10 mA 100 mA ΤΑ The current from one hand to another (i) When plugging in a faulty power cord, you accidently touch one hand off the 120 V cord while the other hand touches a metal object at 0 V. If the electrical resistance across dry skin is approximately 100 kn, what is the most likely body response to this? (4 marks) (ii) The conducting path between the hand and the foot can be approximated as a cylinder 1.6 m long and 0.10 m in diameter. If the resistance of the arm, body and leg shown in the diagram below act in series with wet skin which has a resistance of 1,000 Q, calculate the approximate resistivity of the human body. (4 marks) 1000 www 5000 (c) The World Health Organisation (WHO) has stated that scientific evidence does not confirm the existence of any health consequences from exposure to low level electromagnetic fields. However, that does not mean that there is no biological effect on the body. What general effects could exposure to electromagnetic fields produce within the body? (3 marks) 1000 59% +:0