In a DC circuit, if the voltage across a 5Ω resistor is 15V, what is the current

Practice Questions

Q1
In a DC circuit, if the voltage across a 5Ω resistor is 15V, what is the current through the resistor?
  1. 3A
  2. 2A
  3. 1A
  4. 0.5A

Questions & Step-by-Step Solutions

In a DC circuit, if the voltage across a 5Ω resistor is 15V, what is the current through the resistor?
  • Step 1: Identify the values given in the problem. We have a voltage (V) of 15 volts and a resistance (R) of 5 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 15V and R with 5Ω: I = 15V / 5Ω.
  • Step 4: Perform the division. Calculate 15 divided by 5, which equals 3.
  • Step 5: State the result. The current (I) through the resistor is 3 amperes (3A).
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