Question

If the potential at A is zero, potential at B is

• A. 0 V
• B. 4 V
• C. 6 V
• D. 2 V

Hint:

When moving from the negative terminal to the positive terminal of a battery, the potential \textbf{increases}. When moving from positive to negative, the potential \textbf{decreases}.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
To determine the electric potential at a specific point in a circuit given the potential at another reference point, one must traverse the circuit path and account for the voltage drops or gains across the electrical components connecting them.
Step 2: Key Formula or Approach:
This type of problem utilizes Kirchhoff's Voltage Law (KVL) and Ohm's Law. Starting from a known potential \( V_A \), the potential at \( B \) is found by summing the potential changes \( \Delta V \) along the path: \[ V_B = V_A + \sum \Delta V \] where \( \Delta V \) can be \( \pm IR \) for resistors and \( \pm E \) for batteries.
Step 3: Detailed Explanation:
The given image provides the question text and options but crucially lacks the associated circuit diagram showing points A and B, as well as the intermediate components (resistors, batteries) and their respective values.
Because the circuit diagram is missing from the provided material, it is impossible to trace the path from A to B and calculate the voltage changes. Consequently, a numerical solution cannot be rigorously derived. The provided answer is a structural placeholder.
Step 4: Final Answer:
The problem is incomplete due to a missing circuit diagram, making it unsolvable as presented.