Thermal Effect, Torque and more
Quiz
•
Physics
•
9th Grade
•
Easy
Flip Nel
Used 8+ times
FREE Resource
36 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an electric heater?
It is:
• an mechanical device
• that converts
• an electric current
• into heat.
It is:
• an electrical device
• that converts
• an electric current
• into heat.
It is:
• an electrical device
• that converts
• an electric current
• into wind.
It is:
• an electrical device
• that converts
wind
• into heat.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The heating element inside every electric heater,
is an ...
blowing resistor
mechanical resistor
electrical pan
electrical resistor.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is Joules Heating?
An electric current passing through a resistor, will convert that electrical energy into heat energy.
An electric current passing through a resistor, will convert that electrical energy into wind energy.
An electric current passing through a resistor, will convert that electrical energy into energy.
An electric current passing through a conductor, will convert that electrical energy into heat energy.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is meant by heating effect of electric current?
When an electric current passes through a conductor, (wire) the conductor becomes hot after some time
and produces heat.
When an electric current passes through a conductor, (wire) the conductor becomes cold after some time
and produces heat.
When an electric current passes through a conductor, (wire) the conductor becomes hot after some time
and produces ice.
When an electric current passes through a insulator, (wire) the conductor becomes hot after some time
and produces heat.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is thermal effect of electric current ?
The greater the resistance in the wire
to the flow of current, the greater the heat.
The lower the resistance in the wire
to the flow of current, the greater the heat.
The less the resistance in the wire
to the flow of current, the greater the heat.
The smaller the resistance in the wire
to the flow of current, the greater the heat.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the factors affecting the heat, due to electric current?
Intensity (strength) of the current “I”
Time of the flow of the current “t”
Resistance of the conductor “R”
Time of the flow of the current “t”
Resistance of the conductor “R”
Intensity (strength) of the current “I”
Time of the flow of the current “t”
Resistance of the conductor “R”
Intensity (strength) of the current “I”
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The heat produced by an electric current is...
equal to the
the time for which it flows.
equal to the
product of the resistance of the conductor,
the square of the current,
and the time for which it flows.
is equal to
the square of the current,
and the time for which it flows.
equal to the
product of the resistance of the conductor.
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