In a circuit, if the voltage is tripled and the resistance remains constant, wha

Practice Questions

Q1
In a circuit, if the voltage is tripled and the resistance remains constant, what happens to the current? (2022)
  1. It triples
  2. It halves
  3. It remains the same
  4. It doubles

Questions & Step-by-Step Solutions

In a circuit, if the voltage is tripled and the resistance remains constant, what happens to the current? (2022)
  • Step 1: Understand Ohm's Law, which states that Voltage (V) = Current (I) x Resistance (R).
  • Step 2: Identify that in this scenario, the resistance (R) remains constant.
  • Step 3: Note that if the voltage (V) is tripled, we can express this as V' = 3V, where V' is the new voltage.
  • Step 4: Since R is constant, we can rearrange Ohm's Law to find the current: I = V / R.
  • Step 5: Substitute the new voltage into the equation: I' = V' / R = (3V) / R.
  • Step 6: Simplify the equation: I' = 3(V / R) = 3I, where I' is the new current.
  • Step 7: Conclude that if the voltage is tripled, the current will also triple.
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