The resistance in a circuit is halved. What happens to the voltage?
V = IR
(1 point)
O The voltage is doubled.
The voltage is increased by a factor of 4
O The voltage is halved
O The voltage remains the same
The voltage remains the same.
According to Ohm's law (V = IR), if the resistance in a circuit is halved, and the current remains constant, the voltage across the circuit will also halve. Therefore, the correct answer is: The voltage is halved.
To determine what happens to the voltage when the resistance in a circuit is halved, we can use Ohm's law: V = IR. In this equation, V represents voltage, I represents current, and R represents resistance.
If the resistance is halved, we can say R' = R/2. Plugging this into Ohm's law, we get V = I(R/2).
Since the current (I) has not changed, we can rewrite the equation as V = IR/2. In this new equation, we can see that the voltage (V) is half of what it was before.
Therefore, when the resistance in a circuit is halved, the voltage is also halved. So, the correct answer is: The voltage is halved.