Here is the correct question
A constant electric field E = 100 N/C pointing along the positive x-axis is present throughout a region of space that includes the plane bounded by the y and z axes and the lines y = 50 cm and z = 50 cm. The electric flux through the plane's surface, in N ⋅ m 2/C, is
Answer:
25 Nm²/C
Explanation:
given that
The constant electrical field E = 100 N/C
the field lines y and z = 50 cm and 50 cm respectively
= 0.5 m and 0.5 m
For constant electric field, the flux = electric field x area through which field lines are passing
i.e Flux = (100 ×0.5 × 0.5) Nm²/C
= 25 Nm²/C
Therefore; The electric flux through the plane's surface, in Nm²/C is = 25 Nm²/C
Answer:
(B)Speed - constant, Velocity - changing
Explanation:
The magnitude of the velocity ( speed ) has not changed as car is traveling constantly at 70 km/h. But we know the velocity is also having a direction component, and the car which was traveling South is now traveling East. As direction is changed, velocity is changed but as magnitude of velocity has not changed, the speed remain unchanged.