The electric field $E$ due to $Q$, on the test charge $q$, is independent of $q$.

Draw a diagram to represent the electric field around a positively charged sphere.

Electric ray fish are a group of  flattened cartilaginous fishes with enlarged pectoral fins. They are known for being capable of producing an electric discharge, ranging from $8$ to $220$ volts, depending on species, and they use this electric discharge to stun prey and for defence.

(magnetism,$4.5 \mathrm{V}$,$3.0 \mathrm{V}$, gravitational attraction, potential difference, potential, higher, lower, $0 \mathrm{V}$) 

Water in the waterfall flows from a higher level to the lower level because of _____.

Draw a diagram to represent the electric field between two horizontal parallel plates. The upper plate has a positive charge and the lower plate has a negative charge.

Write the quadrants in which the following points lie:

$\left(-4,7\right)$