Answer to Question #318605 in Electric Circuits for Ivo

Question

Physics Drill: Ohm’s Law. Solve the problem using the principles of Ohm’s

Law below. Show your complete solution.

1. Find the current through a resistor of resistance 𝑅 = 2Ω if the voltage across

the resistor is 6V.

2. While repairing an electric bulb socket, an electrician gets a mild shock when a

current of 0.0050 A passes through him. The same electrician was killed by a

current of 0.15 A when he turned on an electric bulb while taking a bath. The

voltage in each situation is equal to 120 V. Find the resistance of the electrician

in each situation.

3. A typical value of the resistance of a person from hand to hand through the

body is 2,000 Ω. If a person with this resistance accidentally touches a 220 V

live wire, what current passes through the person?

Answer 1

Answers

1.

$\qquad\qquad \begin{aligned} \small i&=\small \frac{V}{R}=\frac{6V}{2\Omega} \end{aligned}$

2.

• Apply the same formula used in the previous step. $\small R =\frac{V}{i}$

3.

• Just apply the $\small V =iR$ and get the current found.