It would be the negative terminal ofc
Answer:
B
Explanation:
It's Scientifically proven
net force= the sum of all the forces acting on the object
the frictional force is opposite to the direction of motion of the object
If the object moves to the right (positive) then the friction force moves to the left (negative).
so the net force: 50 N - 5 N = 45 N (B)
Answer:
A. Zero
Explanation:
Given data,
The charge of the test charge, q = 1 C
The distance moved against the field of intensity, r = 30 cm
= 0.3 m
The electric field, E = 50 N/C
The formula for energy stored in the charge is,
V = k q/r
Where,
= 9 x 10⁹ Nm²C⁻²
The charge is moved from the potential V₁ to V₂ at 30 cm
Substituting the given values in the above equation
V₁ = 9 x 10⁹ x 30 / 0.3
= 1.5 x 10¹² J
And,
V₂ = 1.5 x 10¹² J
The energy stored in it is,
W = V₂ - V₁
= 0
Hence, the energy stored in the charge is, W = 0