The magnetic field inside a circular loop of wire of radius 30 cm increases at a constant rate from 2.0 × 10^–3 T to 3.5 × 10^–3 T in 0.47 s. If the resistance of the loop is 0.31 ?, what is the current in the loop?
a. 7.4 × 10^–4 A b. 5.8 × 10^–4 A
c. 2.9 × 10^–3 A d. 5.8 × 10^–3 A
c
Physics & Space Science
You might also like to view...
The__________of a lens or mirror is the distance from that lens or mirror to the point where it focuses parallel rays of light
A) image distance B) focal length C) radius of curvature D) object distance
Physics & Space Science
A changing magnetic field produces an electric field
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
Free Fall: A ball is thrown straight upward from ground level with a speed of 18 m/s. How much time passes before the ball strikes the ground if we disregard air resistance?
A. 3.7 s B. 1.8 s C. 1.1 s D. 0.6 s
Physics & Space Science
Which of the other terrestrial planets is closest in size to Earth?
A. Venus B. Mars C. the Moon D. Mercury
Physics & Space Science