If a resistor has a current of 2A flowing through it and a voltage of 10V across

Practice Questions

Q1
If a resistor has a current of 2A flowing through it and a voltage of 10V across it, what is the resistance? (2023)
  1. 10Ω
  2. 20Ω

Questions & Step-by-Step Solutions

If a resistor has a current of 2A flowing through it and a voltage of 10V across it, what is the resistance? (2023)
  • Step 1: Identify the values given in the problem. We have a current (I) of 2A and a voltage (V) of 10V.
  • Step 2: Recall Ohm's Law, which states that Resistance (R) is equal to Voltage (V) divided by Current (I). The formula is R = V / I.
  • Step 3: Substitute the values into the formula. Replace V with 10V and I with 2A: R = 10V / 2A.
  • Step 4: Perform the division. Calculate 10 divided by 2, which equals 5.
  • Step 5: Write down the result. The resistance (R) is 5Ω.
  • Ohm's Law – Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R). It is expressed as R = V / I.
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