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Worksheetscurrent& magnet
Total questions: 20
Worksheet time: 17mins
If the light is on, the circuit is _________________.
closed
open
Mahra finds that all of the electric cords in her school are covered with plastic. Why is it important to cover the electric cords with plastic?
Plastic is an insulator.
Plastic is a conductor.
Plastic is strong.
Plastic is available easily
Which statement is true?
The light bulb will light up because the circuit is complete.
The light bulb will light up because the circuit is broken.
The light bulb will not light up because the circuit is complete.
The light bulb will not light up because the circuit is open.
A Charging system producing 9 Volts with a current flow of 0.45 Amps, what is the circuit resistance
5 ohm
20 ohm
15 ohm
10 ohm
If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 Ohms, what is the voltage difference across the light bulb?
5 V
12 V
0.2 V
20 V
What is voltage?
The flow of protons causing potential difference
The number of charged particles that pass each second
The difference in potential energy of charged particles
The rate at which energy is being transformed
What is the unit of electrical power?
Joules
Volts
Amps
Watts
How will the magnetic field shifts will affect life on Earth?
The phenomenon due to which a piece of iron behaves like a magnet when placed near strong magnet is called
power of magnet
Magnetism
Electromagnetism
Induced Magnetism
which of the following are true about magnetic lines of force
field lines moves from north to south inside the magnet
Magnetic lines are uniform
no two lines intersect
U shape magnet has stronger magnetic fields
Magnetic field line of the earth are parallel to the earth surface near the magnetic equator
true
false
the place on earth where the magnetic needle becomes vertical is the magnetic (a)
which statements are true
neutral point is a place where the net magnetic field is zero
magnetic axis of the earth makes a 170 angle with axis of earth rotation
geographic north is the earth magnetic south
geographic north is the earth magnetic north
