HARD
10th CBSE
IMPORTANT
Earn 100

Draw magnetic field around a circular loop carrying current in an anti-clockwise direction.

Important Questions on Magnetic Effects of Electric Current

EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 1>Q 9

What is an electromagnet? How does its strength vary if number of turns in the coil are changed?

EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 2>Q 1

An electron enters a magnetic field at right angles to it as shown. What will be the direction of force acting on electron? (Remember that current flows in opposite direction to that of electron)

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EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 2>Q 2
Direction of current in a conductor kept in magnetic field is reversed. What happens to the direction of force acting on the conductor due to the field?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 2>Q 3
What is the function of brushes in an electric motor?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 2>Q 4
How does the use of electromagnet instead of permanent magnet improve its power?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 2>Q 5
Frequency of AC supplied in India is 50 Hz. After how many seconds does AC change its direction?
EASY
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 2>Q 6
Give an important use of AC generator.
MEDIUM
10th CBSE
IMPORTANT
SCIENCE PHYSICS>Chapter 4 - Magnetic Effects of Electric Current>Progress Check 2>Q 7
Give two methods of inducing electric current in a coil.