Answer:
From Faraday's law of Induction: A changing magnetic field induces emf in the coil.
Explanation:
<u>Faraday's law</u> states that when a coil is run through a changing magnetic field or a magnet is passed back and forth through a coil, a<u>n emf is induced which produces electric current in the coil. </u>
Changing magnetic flux induces electromotive force.
When the magnet is passed back and forth, it causes a changing magnetic flux around the coil. This induces emf and the current flows which lights up the bulb connected to it.
Answer:
Explanation:
Bridge length A B = 36.5 m
weight W = 2.56 x 10⁵ N acting at middle point that is at 18.25 m from either end.
weight of truck W₁ = 5.25 x 10⁴ N standing at 10.2 m from A .
Let force at A be F₁ and at B be F₂ .
Balancing total upward and downward force
F₁ + F₂ = ( 2.56 + .525 ) x 10⁵ = 3.085 x 10⁵ N
Taking torque of all the forces , for rotational balancing
2.56 x 10⁵ x 18.25 + .525 x 10⁵ x 10.2 = F₂ x 36.5
(46.72 + 5.355 )x 10⁵ = F₂ x 36.5
F₂ = 1.42 x 10⁵ N
F₁ = 1.665 x 10⁵ N
Answer:
correct answer is option d) 13 V and 0.46 A
Explanation:
given,
primary coil,
Number of turns N₁ = 1300
Voltage of the primary coil V₁ = 120 V
Current in the primary coil, I₁ =0.05 A
secondary coil,
Number of turns coil N₂ = 140
voltage calculation,
V₂ = 13 V
current calculation:
I₂ = 0.46 A
hence, correct answer is option d) 13 V and 0.46 A
Answer:
b down
Explanation:
because as she is jumping she is bending her nees so the acceleration is down words