Questions: What value of resistor will be needed to produce a current of 100 mA when a voltage of 12 V is applied across the resistor? a) 120 Ohms b) 8.3 K Ohms c) 1.2 K Ohms d) 830 Ohms

Solution Steps

We are given:

• Voltage, \( V = 12 \) V
• Current, \( I = 100 \) mA = 0.1 A

Ohm's Law states that \( V = IR \), where \( R \) is the resistance. Rearranging the formula to solve for \( R \):

\[ R = \frac{V}{I} \]

Substitute \( V = 12 \) V and \( I = 0.1 \) A into the equation:

\[ R = \frac{12 \, \text{V}}{0.1 \, \text{A}} = 120 \, \Omega \]

Final Answer