ELECTRIC CURRENT AND IT'S EFFECT

Quiz
•
Science
•
7th Grade
•
Hard
+3
Standards-aligned

ROOPAM TIWARI
Used 1K+ times
FREE Resource
11 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Q1. If in a circuit diagram containing a cell and nichrome wire tied between two nails, the cell is replaced by a battery then what will happen to the nichrome wire?
A)It gets red hot slowly.
B)No change in the temperature take place.
C)It will get red hot quickly.
D)The wire will break due to increase in strength of current.
Tags
NGSS.MS-PS3-3
NGSS.MS-PS3-4
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Q2. Why Nichrome is used for making wires of heating coils?
1.High melting point and low resistivity.
2.Low resistivity and high melting point.
3.High resistivity and high melting point.
4. It can get oxidised easily and have high melting point
Tags
NGSS.MS-PS3-3
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Q3. Which among the following are the advantages of heating effect of current?
1.Can be used in electric fuse
2.Increases the life of several appliances in the circuit.
3.It helps in preventing loss of energy.
Tags
NGSS.MS-PS1-4
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Q4. Which among the following is the diadvantage of heating effect of current?
1.It can break the insulation of wires/ devices.
2.It prevents energy loss.
3.It is used in working of electric fuse.
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Q5. Tungsten is used for the manufacture of an electric bulb because
A)it is malleable
B) it is inexpensive
C) it has a very high melting point
D) it is a good conductor
Tags
NGSS.MS-PS3-3
NGSS.MS-PS3-4
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Q6. Current in an electric circuit can exceeds it’s maximum limit when,
1.One device is connected to the socket.
2.Touching of two neutral wires.
3.Insulation break down.
4.Touching of two live wires.
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Q7. Current in an electric circuit increased it’s maximum limit when live wire and neutral wire touches each other due to wear and tear of the wires over a period of time. This phenomenon is known as:
1.Over loading.
2.Short- circuit.
3.Magnetic effect of current.
4.Heating effect of current.
Tags
NGSS.MS-PS1-4
NGSS.MS-PS3-3
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