NEW
Font size
WorksheetsMagnetism & Magnetic effect of electric current
Total questions: 20
Worksheet time: 15mins
Hans Christan Oersted, one of leading scientist of 19th century played a crucial role in understanding _________
Electric current
Magnetism
Electromagnetism
Electricmagnetism
What is full form of MRI?
Magnetic Radiology Imaging
Magneto Ray Idometry
Medical Radiometer Instrument
Magnetic Resonance Imaging
Magnetic field produced around a straight conductor due to current in it is given by
Fleming's right hand rule
Right hand thumb rule
Clock rule
Fleming's left hand rule
Magnetic field inside a long solenoid carrying current is
same at all points (uniform)
different at poles and at the centre
zero
different at all points
A soft iron bar is inserted inside a current-carrying solenoid. The magnetic field inside the solenoid will
Increase
Decrease
Remains same
Becomes zero
The magnetic field lines near a long straight wire carrying current are:
Straight lines
Concentric rings
Spiral lines
Radial lines
According to right hand thumb rule the direction of magnetic field in a current carrying straight conductor is denoted by:
Thumb
Curl fingers
Middle finger
First finger
Which of the following does not influence the strentgh of electromagnet?
Number of turns of wire
Magnitude of current flow in the wire
Type of core
Material used for insulator of the wire
10. The SI unit of magnetic field is _________
newton
coulomb
Tesla
Watt
8. The word magnetism was derived from iron ore __________
hematite
magnetite
Cupric
all the above
Inside the magnet, the direction of field lines is from its
north to south
south to north
mag. field do not move inside a magnet.
none
Is magnetic field a scalar quantity or vector quantity?
scalar
vector
both
none
What creates a magnetic field?
charged particles that do not move
moving electric charges
gravity
an isolated magnetic pole
If you break a bar magnet in half, each half...
contains one magnetic pole.
becomes a bar magnet with two poles.
becomes unmagnetized.
is only temporarily magnetized.
Which of these is not a magnetic material?
aluminium
steel
nickel
iron
What does a voltmeter measure?
Current
Voltage
Resistance
How does an ammeter is added in the circuit?
Series
Parallel
An ammeter must have
Low resistance so that it does affect the current through the main circuit
High resistance so that it does affect the current through the main circuit
Low resistance so that it does affect the voltage across the resistor
frequency of revolution of particle in cyclotron
2πmqB
2πBqm
rmv2
Brm
A cyclotron cannot accelerate
proton
deutron
neutron
alpha particles
