Answer:
The acceleration of an electron is 
Explanation:
Given that,
One Charge = 50 μC
Distance on y axis = 3.0 cm
Second charge = 77 μC
Distance on x axis = 4.0 cm
We need to calculate the force on electron due to q₁
Using formula of force

Here, q = charge of electron
Put the value into the formula


We need to calculate the force on electron due to q₂
Using formula of force

Here, q = charge of electron
Put the value into the formula


We need to calculate the net force
Using formula of net force

Put the value into the formula

The magnitude of the net force

We need to calculate the acceleration of an electron
Using formula of force


Put the value into the formula


Hence, The acceleration of an electron is 