Which of these uses a movable core to act as an electric switch?

[jilianpiloj]

Question 1

Where is the force of magnetic lines strongest in a bar magnet?
◦ At each end
◦ In the middle of the magnet
◦ Only at the north pole of the magnet
◦ None of these

Question 2

Which of these uses a movable core to act as an electric switch?
◦ Solenoid
◦ Relay
◦ Transistor
◦ None of these

[samiel-sayed]

Answer 1

At each end

Answer 2

Solenoid

[jilianpiloj]

Wow, this really help

[jojobee318]

Gracias!