Physics
Thermodynamic
Page 19 of 19
#145 The electric potential at a point due to a point charge is V. If the distance is doubled, the potential becomes
A) V/2
B) V/4
C) 2V
D) 4V
Answer: B
#146 The electric field at a point due to a point charge is E. If the distance is doubled, the field becomes
A) E/2
B) E/4
C) 2E
D) 4E
Answer: B
#147 The work done in moving a charge between two points in an electric field is independent of the path taken. This is because the electric field is
A) Conservative
B) Non-conservative
C) Uniform
D) Non-uniform
Answer: A
#148 The electric field and electric potential are related by
A) \( E = - dV / dr \)
B) \( V = - dE / dr \)
C) \( E = dV / dr \)
D) \( V = dE / dr \)
Answer: A
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