Magnetism
Which of the following on an electromagnet would attract a steel paperclip
1. The negative end only
2. The positive end
3. Both positive and negative
4. None of the above
3. Both positive and negative
Which term is best defined "a measure of the energy for an amount of charge "
Voltage , current , power or resistance
Voltage
A light bulb is connected to a voltage source in a circuit . The circuit also contains a switch . If the light bulb is lit and the switch is then open , the light bulb will
1. Go out
2. Shine less brightly
3. Shine more brightly
4. Continue to shine as before
1 . Go out
An electromagnet creates a magnectic force
1. Only with a battery source
2. As long as a power source is connected
3 . Only with atlernating current power source
2 . As long as power source is connected
An electrical device that can control the flow of current in an electrical circuit is called
Resistor
Inducator
Capacitor
Resistor
Which battery would provide the most electrical current
1. 30 cc rectangular battery
2. 60 cc rectangular battery
3. 60 cc cylinder shaped batter
4. None of the above
4. None of the above
As the voltage of a source powering an electromagnet increases , the magnectic force generated by the electromagnet
A . Increases
B . Remains the same
C. Decreases
A . Increases
The flow of a charged particle is called
A . Electric current
B . Voltage source
C . Resistance
D . Inductor
A . Electric current
A light bulb transforms electrical energy to
A . Heat
B. Light
C. Heat and light
D . Mechanical energy
C. Heat and light
A bar magnet with a north and a south pole is cut in half , the newest smallest will
A . Not be magnetic
B . Consist of one having north pole only and the other having south pole only
C . Consist of both north and south poles
C . Both north and south poles
What is the name of an electrical device that turns off a circuit when the circuit becomes overloaded ?
Resistor , circuit breaker , transistor , capacitor
Circuit breaker
An effective conductor is an electrical circuit
1. Resists the flow of charge
2. Made from glass usually
3. Made from paper like material
4. None of the above
4. None of above
Like charges _________ unlike charges ________
Repel and attract
An electrical device that changes the voltage of alternating current is called
1. Transformer
2. Capacitor
3. Inductor
4. Resistor
1 . Transformer
Which of the following is NOT an indictor of electrical energy
1 . Light
2. Heat
3. Work being done
4. None of the above
4 . None of the above