1. As a particle moves 12m along an electric field of strength 76N/C, its electrical potential energy decreases by 4.9 * 10 ^ - 16 * J . What is the particle's charge?

Charge,

Explanation:

Given that,

Distance moved by particle, d = 12 m

Electric field strength, E = 76 N/C

Decrease in potential energy,

We need to fine the charge on the particle. The change in potential energy of the system is given by :

q is charge

So, the charge on the particle is .

r = ρ x length / area  

ρ = r x area / length  

ρ is in ohm-meters  

in basic units, it is m³kg/s³a²  

i think this is it.