द्विध्रुव को समान विद्युत क्षेत्र में रखते समय यदि क्षेत्र का मान शून्य कर दिया जाए तो कौन-सी राशि शून्य हो जाएगी?

If the electric field is made zero while a dipole is placed in it, which quantity becomes zero?

Explanation opens after your attempt
Correct Answer

A. बल आघूर्ण / Torque

Step 1

Concept

Torque depends on the electric field.

Step 2

Why this answer is correct

If the field is zero, electric forces on the charges become zero.

Step 3

Exam Tip

Therefore torque becomes zero, though dipole moment may still exist. चरण 1: बल आघूर्ण विद्युत क्षेत्र पर निर्भर करता है। चरण 2: क्षेत्र शून्य होने पर आवेशों पर विद्युत बल भी शून्य हो जाते हैं। चरण 3: इसलिए बल आघूर्ण शून्य हो जाएगा, पर द्विध्रुव आघूर्ण बना रह सकता है।

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