AFNS — AFNS Physics
Electricity
Page 4 of 5
#25 Right hand rule for:
A) Field direction around current
B) Gravity
C) Sound
D) Light polarization only
Answer: A
#26 Force on moving charge F equals:
A) qvB sin theta
B) ma
C) mg
D) kx
Answer: A
#27 Transformer works on:
A) AC electromagnetic induction
B) DC only steady
C) Gravity
D) Sound
Answer: A
#28 Generator converts:
A) Mechanical to electrical
B) Electrical to mechanical motor
C) Heat to sound
D) Light to mass
Answer: A
#29 Motor converts:
A) Electrical to mechanical
B) Mechanical to electrical
C) Chemical to nuclear
D) Sound to heat
Answer: A
#30 Faraday law:
A) Induced EMF from flux change
B) F=ma
C) V=IR only
D) P=IV only
Answer: A
#31 Lenz law:
A) Induced current opposes change
B) Aids change
C) No induction
D) Only DC
Answer: A
#32 AC frequency in Pakistan mains about:
A) 50 Hz
B) 60 Hz US
C) 100 Hz
D) 0 Hz
Answer: A
Page 4 of 5
Register or Login for comments
Comments: