Question
Electric potential at a point 'P' due to a point charge of 5 10^ -9 C is 50 V . The distance of ' P ' from the point charge is: (Assume, 1 4 _0 =9 10^ +9 Nm ^2 C ^ -2 )
BITSAT
Physics
Electrostatics
2024
BITSAT 2024 (Memory Based Paper 2)
BITSAT Physics Question (2024) — Solution
Options
- A. 3 cm
- B. 9 cm
- C. 90 cm
- D. 0.9 cm
Answer
C. 90 cm
Step-by-step solution
Electric potential at a point P due to a point charge, ( K =9 10^9 ) V_P= K Q r 50= 9 10^9 5 10^ -9 r r = 45 50 = 9 10 =0.9 ~m =90 ~cm
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