Published by:
CGP EDU Academic Team
Published on: September 12, 2026
An α particle is placed in an electric field at a point having electric potential 5V. Find its potential energy?
Text Solution
Verified by ExpertsThe correct answer is:
A
Step 1: Understand the charge of the α particle. An α particle consists of 2 protons and 2 neutrons, thus its charge (q) is +2e, where e is the elementary charge, approximately 1.6 x 10-19 C. Therefore, q = 2 × 1.6 x 10-19 C = 3.2 x 10-19 C.
Step 2: Use the formula for potential energy (U) in an electric field, which is given by:
U = qV, where V is the electric potential.
Step 3: Substitute the values into the equation:
U = (3.2 x 10-19 C)(5 V) = 1.6 x 10-18 J.
Step 4: Therefore, the potential energy of the α particle is 1.6 x 10-18 J.
Step 2: Use the formula for potential energy (U) in an electric field, which is given by:
U = qV, where V is the electric potential.
Step 3: Substitute the values into the equation:
U = (3.2 x 10-19 C)(5 V) = 1.6 x 10-18 J.
Step 4: Therefore, the potential energy of the α particle is 1.6 x 10-18 J.
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