Question

question 21 (1 point)
a 4000-ω resistor is connected across 220 v. what current will flow?
0.055 a
1.8 a
5.5 a
18 a
question 22 (1 point)
the resistance of a wire is defined as
(current)*(voltage).
(current)/(voltage).
(voltage)/(current).
none of the given answers

Explanation:

Question 21

Step1: Recall Ohm's Law

Ohm's Law states that \( I = \frac{V}{R} \), where \( I \) is current, \( V \) is voltage, and \( R \) is resistance.

Step2: Substitute values

Given \( V = 220 \, \text{V} \) and \( R = 4000 \, \Omega \), substitute into the formula: \( I=\frac{220}{4000} \)

Step3: Calculate the result

\( \frac{220}{4000}=0.055 \, \text{A} \)

Resistance is defined by Ohm's Law, which is \( R=\frac{V}{I} \), meaning resistance is voltage divided by current.

Answer:

0.055 A

Question 22