• 4 Questions
A resistor is placed in a circuit with an adjustable voltage source. The voltage across and the current through the resistor and the measurements are shown in the graph. Estimate the resistance of the resistor.
Calculate the effective resistance of a pocket calculator that has a 1.35-V battery if the current through the calculator is 0.200 mA.
What voltage is involved in a 1.44-kW short circuit through a 0.100- resistance?
Currents of approximately 0.06 A can be potentially fatal. Currents in that range can make the heart fibrillate (beat in an uncontrolled manner). The resistance of a dry human body can be approximately 100 kΩ.
What voltage can produce 0.2 A of current through a dry human body?
When a human body is wet, the resistance can fall to 100 Ω. What voltage can cause harm to a wet body?