Title: Exp9
Course: مختبر فيزياء عامه 2 الشعبة 10 عملي

Q: A solenoid 15.0 cm long has 300 turns and carries a current of 5.0 A. if 2.0 cm segment of a current balance arm is balanced inside the solenoid when the magnetic force on the segment 1x10^-5 N. the current in it is
- 40 mA
- 20 mA
- 80 mA
- 60 mA
A: 40 mA

Q: A solenoid 12.0 cm long has 600 turns and carries a current of 3 A. the magnetic field strength inside this coil is
- 19 mT
- 29 mT
- 39 mT
- 9 mT
A: 19 mT

Q: A solenoid 10.0 cm long has 800 turns and the magnetic field strength inside this coil is 30 mT, it carries a current of
- 3 A
- 6 A
- 9 A
- 0.4 A
A: 3 A

Q: The magnetic field strength inside a certain solenoid is 40 mT. If a 6 cm conducting strip, which is perpendicular to the magnetic field inside the solenoid, the current in the conducting strip is 3 A. The magnetic force is
- 0.0072 N
- 0.072 N
- 0.0032 N
- 0.032 N
A: 0.0072 N

Q: Suppose we have a solenoid with a magnetic field strength of 25 mT (milliteslas) inside it. If a 10 cm long conducting wire is placed perpendicular to this magnetic field and a current of 4 A flows through this wire, we want to calculate the magnetic force experienced by this wire
- 0.01 N
- 0.02 N
- 0.03 N
- 0.04 N
A: 0.01 N

Q: A solenoid 20.0 cm long has 300 turns and the magnetic field strength inside this coil is 30 mT, it carries a current of
- 16 A
- 6 A
- 36 A
- 2 A
A: 16 A