NCERT Class 10 Science-Magnetic Effects of Electric Current[Magnetic Field Due to a Current-Carrying Conductor] [NCERT Based General Studies (GS)]: Questions 1 - 5 of 19
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Question 1
Question MCQ▾
When the core of solenoid is of hard steel the magnetic field is:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Strong and permanent magnet is produced | |
b. | Strong and acts as a electromagnet | |
c. | Strong and acts as strong magnet as long as current is flowing through it | |
d. | Question does not provide sufficient data or is vague | |
Question 2
Question MCQ▾
Electromagnets are:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Winding a large number of turns of an insulated wire on a cylindrical soft iron core | |
b. | Temporary magnets | |
c. | Prepared by placing soft iron core in a solenoid | |
d. | All a., b. and c. are correct | |
Question 3
Question MCQ▾
The magnetic lines of force around a straight conductor carrying electric current are:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Concentric circles with conductor at the centre | |
b. | Clockwise | |
c. | Concentric circles | |
d. | Anticlockwise | |
Question 4
Question MCQ▾
Bar magnets are:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Permanent magnets | |
b. | Polarity of bar magnet can be changed | |
c. | Strength of a magnetic field can be changed | |
d. | All of the above | |
Question 5
Question MCQ▾
Strength of the magnetic field produced by a current carrying circular coil is directly proportional to the:
Choices
| Choice (4) | Response | |
|---|---|---|
a. | Radius of the circular coil and number of turns of wire in circular coil | |
b. | Current flowing through a wire | |
c. | Radius of the circular coil and current flowing through it | |
d. | Current flowing though the coil and number of turns of wire in the circular coil | |