What is the current through a 12Ω resistor when a voltage of 48V is applied acro

Practice Questions

Q1
What is the current through a 12Ω resistor when a voltage of 48V is applied across it? (2021)
  1. 2A
  2. 3A
  3. 4A
  4. 6A

Questions & Step-by-Step Solutions

What is the current through a 12Ω resistor when a voltage of 48V is applied across it? (2021)
  • Step 1: Identify the values given in the problem. We have a voltage (V) of 48 volts and a resistance (R) of 12 ohms.
  • Step 2: Recall Ohm's law, which states that current (I) is equal to voltage (V) divided by resistance (R). The formula is I = V / R.
  • Step 3: Substitute the values into the formula. Replace V with 48V and R with 12Ω: I = 48V / 12Ω.
  • Step 4: Perform the division. Calculate 48 divided by 12, which equals 4.
  • Step 5: State the result. The current (I) through the resistor is 4 amperes (A).
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