WorksheetsMagnetic Field & Magnetic Force
Total questions: 10
Worksheet time: 8mins
What does the thumb indicate in flemings left hand rule?
Force
Motion
Current
Magnetic field direction
What angle must there be between a magnetic field and a conductor in order for the maximum force to be exerted?
180
45
90
270
Give two ways you can reverse the direction of a basic dc motor?
Reverse the current
Keep the current the same
Reverse the magnetic field
Keep the magnetic field the same
Electric motors are devices that convert _____ energy into _____ energy.
answer choices
electrical; mechanical
mechanical; electrical
chemical; potential
mechanical; kinetic
What component becomes a temporary magnet when electricity is flowing through the circuit?
iron nail
copper wire
battery
switch
Electromagnet is a permanent magnet
True
False
Hans Christian Oersted was known for his ________ experiment
a. Induction ring
b. Television
c. Refrigerator
d. Compass needle
Which statement is correct?
The magnetic field lines inside a current carrying solenoid are equidistant curved lines showing non-uniform magnetic field
The magnetic field lines inside a current carrying solenoid are equidistant parallel lines showing non-uniform magnetic field
The magnetic field lines inside a current carrying solenoid are equidistant parallel lines showing uniform magnetic field
The magnetic field lines inside a current carrying solenoid are equidistant curved lines showing uniform magnetic field
Which statement/statements are true according to magnetic field around a current carrying circular loop?
The magnetic field at the centre depends inversely on the radius of the loop
The magnetic field at the centre depends directly on the number of turns of the loop
The magnetic field at the centre depends inversely on the current flowing in the loop
The magnetic field at the centre depends directly on the radius of the loop
If the current in a straight wire is flowing towards east direction, the magnetic field at a point below the wire will be
towards north
towards west
towards south
upwards
