A coil with a self-inductance of 0.75 mH experiences a constant current buildup from zero to 15 A in 0.25 s. What is the induced emf during this interval?
a. 0.045 V
c. 0.030 V
b. 0.47 V
d. 0.019 V
A
Physics & Space Science
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When the velocity and acceleration of an object have opposite signs, the speed of the object increases
Indicate whether the statement is true or false
Physics & Space Science
What would happen to Earth's temperature if you painted the entire surface of the Earth white?
A) Its temperature would not change. B) Its average temperature would go down. C) Its average temperature would go up.
Physics & Space Science
Five children are pushing on a snowball; each is pushing with a force of 10.0 N. Each is pushing at an angle of 45
relative to his neighbor. What is the net push on the ball?
A. 0 N B. 24.1 N C. 27.1 N D. 17 N E. 50 N
Physics & Space Science
Which of the following represents the equipotential lines of a dipole?
a.
b.
c.
