In a circuit, if the voltage is halved and the resistance remains constant, what

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Question: In a circuit, if the voltage is halved and the resistance remains constant, what happens to the current?

Options:

Correct Answer: It halves

Solution:

According to Ohm\'s law, if voltage is halved while resistance remains constant, current also halves.

In a circuit, if the voltage is halved and the resistance remains constant, what happens to the current?

In a circuit, if the voltage is halved and the resistance remains constant, what happens to the current?

Step 1: Understand Ohm's Law, which states that Current (I) = Voltage (V) / Resistance (R).
Step 2: Identify that in this scenario, the voltage (V) is being halved.
Step 3: Recognize that the resistance (R) remains the same.
Step 4: Since the voltage is halved, you can express the new current as I' = (V/2) / R.
Step 5: Simplify the equation: I' = (1/2) * (V / R).
Step 6: Notice that (V / R) is the original current (I), so I' = (1/2) * I.
Step 7: Conclude that if the voltage is halved and resistance is constant, the current also halves.

Ohm's Law – Ohm's Law states that current (I) is directly proportional to voltage (V) and inversely proportional to resistance (R), expressed as I = V/R.