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WorksheetsElectricity & Magnetism
Total questions: 31
Worksheet time: 38mins
Something electricity CAN'T move through is called a(n) ______.
conductor
wire
shoe
insulator
What size resistor would produce a current of 3A with a 12V battery?
1 Ohm
3 Ohms
4 Ohms
12 Ohms
If a battery produced 12.6V, what would the current be with a 6 Ohm resistor?
2.1 Amps
2.4 Amps
1.71 Amps
15 Amps
If the resistance of a circuit increases, then the current through the circuit would ____.
decrease
increase
be unchanged
Not enough information
This is an example of a _______ circuit.
open
series
parallel
square
This is an example of a ______ circuit.
Series
Parallel
Open
Dihexihedral
The equivalent resistance of this circuit is _________.
25.7 ohms
315 ohms
324 ohms
90 ohms
What is the transfer of energy in a generator?
Mechanical to Electrical
Physical to Potential
Electrical to Mechanical
Yogurt to Light
A device that transforms ELECTRICAL energy to MECHANICAL energy is a ____________.
generator
motor
transformer
magnet
In a parallel circuit, if one of the light bulbs burns out the rest _________.
stop the flow of electricity
can still light up
will go out too
Not enough information
How can a magnet be used to produce an electric current?
Hold a magnet next to a piece of wire.
Wrap wire around a magnet.
Move the magnet around inside a coil of wire.
It's not possible to use a magnet to produce an electric current.
Increasing the number of coils in an electromagnet will _________ the strength of the magnet.
decrease
increase
not affect
The right-hand rule is used to determine
the direction of the magnetic field lines
the strength of an electromagnet
the number of batteries used
the voltage of the current
An electric current produces what?
magnetic field
magnet
solenoid
insulator
Four charged particles are moving in the magnetic field depicted in the illustration above. Which particle’s motion is unaffected by the magnetic field?
A, the motion must be perpendicular to the magnetic field
B, the motion must be in the same direction as the magnetic field lines
C, the charge must not be moving
D, the motion must be perpendicular to the magnetic field
Ohms
Watts
Power is defined as voltage times amperage. The equations is ___.
P = I x V
V + P = I
I x P = V
P = V / I
Since transformers do not affect the amount of power in the circuit, if the voltage is increased, the current must ________________.
increase
decrease
stay the same
not enough information
In a step-up transformer, the voltage is increased, and the current is ______________.
increased
decreased
stays the same
not enough information
In a step-down transformer, voltage is ______________ and current is __________________.
increased; decreased
increased; increased
decreased; decreased
decreased; increased
In a parallel circuit, ________________ is consistent throughout.
current
power
resistance
voltage
In a series circuit, the voltage used at a certain resistor is found by:
multiplying the resistance of that resistor by the voltage of the battery (RV)
dividing the resistance of that resistor by the current of the circuit (R/I)
multiplying the current of the circuit by the resistance of that resistor (IR)
dividing the voltage of the battery by current of the circuit. (V/I)
What is the power used by the 20 Ohm resistor?
4.4 W
.97 W
9.09 W
1.94 W
