The electric intensity in air at a point 20 cm from a point charge Q coulombs is 4.5 × 105 N/ C. The magnitude of Q is
A. 20 µC
B. 200 µC
C. 10 µC
D. 2 µC
Answer:D
The electric intensity in air at a point 20 cm from a point charge Q coulombs is 4.5 × 105 N/ C. The magnitude of Q is
A. 20 µC B. 200 µC C. 10 µC D. 2 µC