A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange and silver?

Answer: Option C

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