Title: Exp-1,7,8,9
Course: مختبر فيزياء عامه 2 الشعبة 10 عملي

Q: A solenoid 15.0 cm long has 600 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
- 20 mA
- 100 mA
- 2 mA
- 300 mA
A: 20 mA

Q: The magnetic field strength inside a certain solenoid is 50 mT. If a 4 cm conducting strip, which is perpendicular to the magnetic field inside the solenoid, the current in the conducting strip is 2 A. The magnetic force is
- 4 x 10 ^-3 N
- 40 x 10 ^-3 N
- 9 x 10 ^-3 N
- 4 x 10 ^-6 N
A: 4 x 10 ^-3 N

Q: A solenoid 15.0 cm long has 600 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 current in it is 3.0 A.  The magnetic force on the segment is
- 1.5 x 10 ^-3 N
- 5 x 10 ^-3 N
- 1.5 x 10 ^-5 N
- 15 x 10 ^-3 N
A: 1.5 x 10 ^-3 N

Q: The magnetic field strength inside a certain solenoid is 0.025 T. If a 3.2 cm conducting strip, which is perpendicular to the magnetic field inside the solenoid, experiences a force of 5.9X10^−4 N, the current in the conducting strip is
- 0.74 A
- 3.74 A
- 74 A
- 6 A
A: 0.74 A

Q: A solenoid 10.0 cm long has 500 turns and carries a current of 2 A. the magnetic field strength inside this coil is
- 12.5 mT
- 12.5 T
- 30 mT
- 100 mT
A: 12.5 mT

Q: A solenoid 10.0 cm long has 500 turns and the magnetic field strength inside this coil is 25 mT, it carries a current of
- 4 A
- 8 A
- 40 A
- 7 A
A: 4 A