Ohms Law MCQ Questions & Answers | Electrical Engineering

Ohm's Law helps us understand the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit.
The formula is: V = I x R
We can rearrange this formula to find the current (I): I = V / R
In this question, we are given:
Voltage (V) = 18 kV = 18,000 V (Remember to convert kilovolts to volts!)
Resistance (R) = 15 kΩ = 15,000 Ω (Convert kiloohms to ohms!)
Now, let's plug these values into the formula:
I = 18,000 V / 15,000 Ω
I = 1.2 A
Therefore, the current produced is 1.2 Amperes.
The correct answer is A.

This question is about Ohm's Law, which is a fundamental rule in electrical circuits.
Ohm's Law tells us how Voltage (V), Current (I), and Resistance (R) are related.
The formula for Ohm's Law is: V = I * R
Where:
* V is the Voltage (measured in Volts)
* I is the Current (measured in Amperes or Amps)
* R is the Resistance (measured in Ohms)
In our question, we know:
* The Voltage (V) is 110 V
* The Current (I) is 0.6 A
We need to find the Resistance (R).
To find R, we can rearrange the formula: R = V / I
Now, let's plug in the values:
R = 110 V / 0.6 A
R ≈ 183.33 Ω
So, the closest answer from the options is 183 Ω.
That means Option A is correct.

Okay, let's break down this problem step-by-step!

First, we need to figure out the resistance using the color code: red, orange, and silver.

* Red = 2
* Orange = 3
* Silver = 10% tolerance (we'll ignore tolerance for calculating resistance).

So, the resistor value is 23 ohms.

Now, we can use Ohm's Law which is: Voltage (V) = Current (I) * Resistance (R) or V = IR.

We know the voltage (V) is 50 V and the resistance (R) is 23 ohms. We want to find the current (I).

We can rearrange Ohm's Law to solve for current: I = V / R

Plug in the values: I = 50 V / 23 ohms = 2.17 Amperes(A).

Since the options are in milliamperes (mA), we need to convert Amperes to milliamperes. Remember 1 A = 1000 mA.

So, 2.17 A * 1000 mA/A = 217 mA (approximately).

Option C: 217 mA