K Science Chapter 8 GRADE A QUESTIONS WITH
ANSWER
transformer - (correct answer)a device that increases or decreases voltage in a power
line is called a
direct current - (correct answer)current that does not reverse direction is called
magnetic poles - (correct answer)the location of the strongest magnetic forces on a
magnet are the
alternating current - (correct answer)current that reverses direction in a regular pattern
is called
magnetic field - (correct answer)the region around a magnet where the magnetic forces
act is the
permanent magnets - (correct answer)objects that keep their magnetic properties for a
long time are called
galvanometer - (correct answer)an instrument that measures electric current is a
commutator - (correct answer)a reversing switch that rotates with the coil in an electric
motor and reverses the direction of the current every half turn is a
change electrical energy to mechanical energy - (correct answer)the function of an
electrical motor is to
change mechanical energy to to electrical energy - (correct answer)the function of a
generator is to
ANSWER
transformer - (correct answer)a device that increases or decreases voltage in a power
line is called a
direct current - (correct answer)current that does not reverse direction is called
magnetic poles - (correct answer)the location of the strongest magnetic forces on a
magnet are the
alternating current - (correct answer)current that reverses direction in a regular pattern
is called
magnetic field - (correct answer)the region around a magnet where the magnetic forces
act is the
permanent magnets - (correct answer)objects that keep their magnetic properties for a
long time are called
galvanometer - (correct answer)an instrument that measures electric current is a
commutator - (correct answer)a reversing switch that rotates with the coil in an electric
motor and reverses the direction of the current every half turn is a
change electrical energy to mechanical energy - (correct answer)the function of an
electrical motor is to
change mechanical energy to to electrical energy - (correct answer)the function of a
generator is to
