# Question: Suppose you are using a drill that is incorrectly wired

Suppose you are using a drill that is incorrectly wired as in Fig. 18.22a, and you make electrical contact with an ungrounded metal case.

(a) Explain why this is a dangerous situation for you.

(b) Estimate the current in you, assuming an overall body resistance of 300-Ω between your hand and feet. Would this be dangerous?

(a) Explain why this is a dangerous situation for you.

(b) Estimate the current in you, assuming an overall body resistance of 300-Ω between your hand and feet. Would this be dangerous?

**View Solution:**## Answer to relevant Questions

(a) In Exercise 48, suppose instead the case had been properly wired and grounded as shown in Figure 18.23. If the grounding wire had a total resistance of 0.10-Ω, what is the ratio of the current in you to the current in ...Nine resistors, each of value R, are connected in a “ladder” fashion, as shown in Fig. 18.42. (a) What is the effective resistance of this network between points A and B? (b) If R = 10 Ω and a 12.0-V battery is ...Three resistors with values 1.0-Ω, 2.0-Ω, and 4.0-Ω are connected in parallel in a circuit with a 6.0-V battery. What are (a) The total equivalent resistance, (b) The volt-age across each resistor, and (c) The power ...A proton enters a uniform magnetic field that is at a right angle to its velocity. The field strength is 0.80 T and the proton follows a circular path with a radius of 4.6 cm. What are (a) The magnitude of its linear ...Given two identical iron bars, one of which is a permanent magnet and the other unmagnetized, how could you tell which is which by using only the two bars?Post your question