Question

When current and resistance are given, use V = IR to calculate voltage (show your work). Current = 20 amps, Resistance = 12 Ohms, V = ?

A) 120 V
B) 200 V
C) 240 V
D) 360 V

Answer 1

Using Ohm's Law (V = IR), with a current of 20 amps and resistance of 12 Ohms, the voltage is calculated to be 240 volts, answer option (C).

Step-by-step explanation:

When the current and resistance are given, to calculate the voltage (V) we can use Ohm's Law, which is V = IR. In this case, the current (I) is 20 amps and the resistance (R) is 12 Ohms.

To find voltage (V), we multiply the current by the resistance:

• V = I × R
• V = 20 A × 12 Ω
• V = 240 V

Therefore, the correct voltage is 240 volts (C).