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What is the voltage across a 10 Ω resistor carrying a current of 3 A?

Practice Questions

Q1
What is the voltage across a 10 Ω resistor carrying a current of 3 A?
  1. 30 V
  2. 15 V
  3. 10 V
  4. 20 V

Questions & Step-by-Step Solutions

What is the voltage across a 10 Ω resistor carrying a current of 3 A?
  • Step 1: Identify the values given in the problem. We have a resistor with a resistance of 10 ohms (Ω) and a current of 3 amperes (A).
  • Step 2: Recall Ohm's law, which states that voltage (V) is equal to current (I) multiplied by resistance (R). The formula is V = I * R.
  • Step 3: Substitute the values into the formula. Replace I with 3 A and R with 10 Ω: V = 3 A * 10 Ω.
  • Step 4: Perform the multiplication: 3 * 10 = 30.
  • Step 5: Conclude that the voltage across the resistor is 30 volts (V).
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