DA January 20Q

• A

• B

• C

• D

• A

• B

• C

• D

Answer explanation

Field lines are directed from North to South

• A

• B

• C

• D

Answer explanation

Use Fleming's Left Hand Rule

thumb = motion (direction of force)

first finger = magnetic field direction

second finger = current direction (positive to negative)

Which two adjectives describe the magnetic field lines for a UNIFORM magnetic field?

• Evenly spaced

• Parallel

• Pointing to the north pole

• Made by a current

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

What is a beta particle?

• A nucleon

• A neutron

• A proton

• An electron

How many protons are in the daughter nucleus (Xenon)?

• 53

• 54

• 131

• 78

Answer explanation

The atomic number (at the bottom is the number of protons in the nucleus)

• A

• B

• C

• D

Answer explanation

THE ELECTROMAGNETIC FIELD STRENGTH INCREASES WITH CURRENT, NUMBER OF TURNS IN THE COIL AND BY USING AN IRON CORE