EASY
10th CBSE
IMPORTANT
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An alternating current has a frequency of 50 Hz. How many times does it change its direction in one second?

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Important Questions on Magnetic Effects of Electric Current

EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 2
Define electromagnetic induction.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 3
What is the meaning of the term 'frequency' of an alternating current? What is its value in India?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 5
What do you mean by the current rating of an electric fuse?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 6
Name the material generally used to make electric fuse.
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 8
How is induced current in a secondary coil related to the current in a primary coil?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 9
Name the scientist who discovered that a moving magnet can be used to generate electric current. What is this phenomenon known as?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 12
Which of the three wires - live wire, neutral wire or earth wire goes through a switch?
EASY
10th CBSE
IMPORTANT
Eduwiser's CBSE PHYSICS FOR CLASS X>Chapter 2 - Magnetic Effects of Electric Current>EXERCISE>Q 13
State the colour convention for live, neutral and earth wires.