It is true!!
One au (Astronomical Unit) is the distance from the Earth to the Sun.
Hope I helped!!
Watts = Ampere * Voltage
Watts = Joules / second
Watts = Ampere² * Ohms
Watts = Volt² / Ohms
Answer:
At twice the distance, the strength of the field is e/4
Explanation:
F = the strength of an electric field.
F is inversely proportional to the squared distance from the point charge.
mathematically,
F = k(e/d²)
hence, if d is doubled,keeping other forms constant
F = e/4,