Question

Which of the following would cause electromagnetic induction?

1.The tv turned on
2. A cell phone is charged by plugging it into the outlet.
3. A constant current is supplied to a circuit board in your computer
4. A flashlight is charged by shaking an internal magnet back and forth through coiled wires

Answer 1

Answer:

option 4- A flashlight is charged by shaking an internal magnet back and forth through coiled wires

Explanation:

this is so because electro magnetic induction is produced by changing magnetic field

Answer 2

Answer:

4. A flashlight is charged by shaking an internal magnet back and forth through coiled wires

Explanation: