Answer:
If you increase the number of loops in a solenoid, the strength of the magnetic field of an electromagnet will increase.
Explanation:
<h2>A
wheel <em>rotated</em><em> </em><u>at</u><u> </u><u>an</u><u> </u><u>angular</u><u> </u><u>velocity</u><u> </u>of 30 roads . if an acceleration of 26road is applied to it waht eill be the ans</h2>
Answer:
zero
Explanation:
For a solid conducting sphere, charges are present on the surface of the sphere due to a phenomenon known as electrostatic sheilding. This affects the charge present in the body and makes it zero. However, the electrostatic potential appears to be equal to the whole present point that shows on the surface. The surface of a spherical conducting solid sphere is known as an equipotential surface. Thus, the potential difference between the two opposite points on the surface of the sphere will also be zero.
Answer:
c is the correct option
Explanation:
Electric field strength is high when electric filed lines are closer together(Represented by red lines in the diagram).
Electric potential is the work done in bringing a unit positive charge from one location to another.
Answer:
Power, P = 112500 watts
Explanation:
It is given that,
Mass of the car, m = 1500 kg
Initial velocity of the car, u = 0
Final velocity of the car, v = 30 m/s
Time taken, t = 6 s
The minimum average power delivered by the engine is given by :
P = W/t
Where
W = work done
t = time taken
Work done = change in kinetic energy
So,
P = 112500 watts
So, the minimum average power delivered by the engine is 112500 watts. Hence, this is the required solution.