Please explain why on true and false questions. If the electric field is zero th
ID: 1789544 • Letter: P
Question
Please explain why on true and false questions.
If the electric field is zero throughout a region of space, then the electric potential is also zero at every point in that region (True/ False) D (i) If a conductor is in electrostatic equilibrium which one of the 4 quantities is zero inside the conductor? (total charge, Coulomb force, total potential, total E field) (in) If an electron is released from rest in a uniform E field, the electric potential energy of the (charge-field) system (Choose any one: increases, decreases, remains the same, becomes zero) radially outward from the charge (True / False)_ (v) The electric potential due to a positive point charge at a distance r is always directed If enthalpy change for a reaction is zero, change in free energy AG is equal to A. TAS B. -TAS D. In Keq E. 0Explanation / Answer
Answer of (i)
False
If the Electric field is zero throughout a region of space, its potential will be a constant quantity. This is because:
Quantitative Explanation: E= - dV/dr so if E=0 implies that v is a constant.
Qualitative Explanation: Electric field inside a charged conducting sphere is zero but its potential at any point inside the sphere is same as that on the surface of the sphere.
Answer of (iv)
False
The Electric potential is a scalar quantity so it has no direction. However, the direction of electric field for positive charge is always directed radially outwards from the charge.