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The device used to measure the strength of a magnetic field is called:
A. Magnetometer
B. Voltmeter
C. Ammeter
D. Galvanometer
Answer: Magnetometer
The magnetic field inside a solenoid is:
A. Uniform
B. Zero
C. Maximum at the ends
D. Variable
Answer: Uniform
What is the formula for calculating the magnetic force on a current-carrying wire?
A. F = I × B × L
B. F = I × R
C. F = B × L
D. F = I × V
Answer: F = I × B × L
The force on a charged particle moving in a magnetic field is maximized when the angle between the velocity and the magnetic field is:
A. 90 degrees
B. 0 degrees
C. 180 degrees
D. 45 degrees
Answer: 90 degrees
Which law states that a change in magnetic flux induces an electromotive force (EMF)?
A. Faraday's law
B. Lenz's law
C. Ampere's law
D. Biot-Savart law
Answer: Faraday's law
The direction of the magnetic field around a current-carrying wire is given by:
A. Right-hand rule
B. Left-hand rule
C. Ampere's law
D. Faraday's law
Answer: Right-hand rule
What is the SI unit of magnetic flux?
A. Weber
B. Tesla
C. Henry
D. Farad
Answer: Weber
The SI unit of electric current is:
A. Ampere
B. Volt
C. Watt
D. Ohm
Answer: Ampere