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WorksheetsOhms Law
Total questions: 50
Worksheet time: 1hrs 3mins
is the opposition to the flow of charges in a material.
Resistance
Voltage
Time
Current
What would happen if in a circuit the voltage is increase?
The time would increase
The current would increase
The current would decrease
The current would stay the same
What would happen if in a circuit, the resistance increases but the voltage stays the same?
The current would decrease
The current would increase
The voltage would decrease
The voltage would increase
If lamp 1 is unscrewed from its holder, what will happen to lamp 2?
It will get brighter
It will stay the same brightness
It will go out
Nothing will happen
If lamp 2 is unscrewed from its holder, what will happen to lamp1?
It will stay lit
It will go out
It will get dimmer
It will dissapear
What is the formula for ohms law?
1+2=3
V X E = I
V =I x R
E= MC squared
the symbol shown in the figure represent :
single cell
multiple cells
ac supply
resistor
the symbol shown in the figure represent:
current
resistor
ac supply
dc supply
the symbol shown in the figure represent:
voltmeter
ohmmeter
multimeter
ammeter
the fire shown represents:
a resistor
a potentiometer
a DC supply
a current
What supplies energy in an electric
circuit?
conductor
light bulb
battery
Which material is a conductor?
plastic
silver
glass
Is this an open circuit or a closed circuit?
open
closed
Why is electrical wiring usually made from copper?
Because copper is shiny
Because copper conducts electricity
Because copper is not magnetic
Because copper insulate electricity
A material that does NOT let electricity pass through it is called ...
An electrical conductor
An electrical insulator
An electrical source
An electric appliance
What is the name of this device?
electric circuit
generator
electromagnet
electric motor
What is the name of this device?
electric circuit
electric motor
electromagnet
generator
What is the name of this device?
electric circuit
electric motor
generator
electromagnet
What is the name of this device?
electric circuit
electric motor
generator
electromagnet
What happens in an electromagnet?
Mechanical energy produces an electric field
Mechanical energy transforms into electrical energy
Electrical energy produces a magnetic field
Electrical energy transforms into mechanical energy
When electricity to an electromagnet is stopped, what happens to the strength of the magnet?
The magnetism stays the same
The magnetism decreases
The magnetism increases
The magnetism stops
Which energy transformation is found in generator?
Chemical energy to Electrical energy
Chemical energy to Mechanical energy
Electrical energy to Mechanical energy
Mechanical energy to Electrical energy
What is created by the flow of electric current?
A magnetic field
A transformer
An electric field
A battery
the relationship between voltage, current, and resistance is called __________ Law
Newton's
Murphys
Ohm's
Faraday's
When you rub a balloon on your head ...
electrons are given by your hair to the ballon
electrons are given by the balloon to your hair
Protons are given by your hair to the ballon
Protons are given by the balloon to your hair
A laptop is plugged into a 120 V outlet and uses 60 ohm's of resistance. How much current is running though it?
120 Amps
60 Amps
2 Amps
20 Amps
A SERIES circuit has 3 light bulbs. You remove 2 of the lightbulbs from the circuit and now have a complete circuit with 1 light bulb. Will the remaining light bulb be brighter, dimmer, or stay the same?
Brighter
Dimmer
Stay the same
A PARALLEL circuit has 3 light bulbs. You remove 2 of the lightbulbs from the circuit and now have a complete circuit with 1 light bulb. Will the remaining light bulb be brighter, dimmer, or stay the same?
Brighter
Dimmer
Stay the same
A current in a series circuit
decreases to zero
stays the same at all points
is strongest in the largest resistor
is weakest in the largest resistor
A parallel circuit has ________ pathway(s) and a series circuit has ____________ pathway(s)
multiple, a single
a single, multiple
multiple, multiple
a single, a single
