CBSE Class 10 Science Chapter 13 Magnetic Effects of Electric Current Multiple Choice Questions with Answers. MCQ Class 10 Science Magnetic Effects of Electric Current with Answers was Prepared Based on Latest Exam Pattern. Students can solve NCERT Class 10 Science Magnetic Effects of Electric Current MCQs with Answers to know their preparation level.
MCQ Class 10 Science Magnetic Effects of Electric Current with Answers - Set - 2
Question 1:Â
Appliances that have a metal body are generally connected to the earthing wire. What is
the reason to earth these wires?
(a) to prevent excess of current
(b) to prevent the leakage of current
(c) to provide extra current to appliance
(d) to provide high resistance to the appliance
Correct Answer – (B)
Question 2 :Â
For a current in the long straight solenoid N and S- poles are created at the two ends. Among the following statement, the incorrect statement is:
a) The field lines inside the solenoid are in the form of straight lines which indicates that the magnetic field is the same at the all points inside the solenoids
b) The strong magnetic field produced inside the solenoid can be used to magnetize a piece of magnetic material like soft iron, when place inside the coil
c) The pattern of the magnetic field associated with the solenoid is different from the pattern of the magnetic field around a bar magnet.
d) The N and S-poles exchange position when the direction of the current through the solenoid is reversed
Correct Answer – (C)
Question 3 :Â
Assertion (A):Â As the speed of the coil in the motor increases, there is reduction in the current flowing through it.
Reason (R):Â During rotation in an electric motor, some induced current is produced.
(a) (A) is incorrect and (R) is correct.
(b) (A) is correct and (R) is incorrect.
(c) Both (A) and (R) are correct but (R) is not the correct explanation of (A).
(d) Both (A) and (R) are correct but (R) is the correct explanation of (A).
Correct Answer – (D)
Question 4 :Â
A metal rod PQ is placed in the magnetic field. The ends of the rod are connected with a battery using wires.
Where will the rod move?
(a) upward
(b) downwards
(c) into the field
(d) out of the field
Correct Answer – (D)
Question 5 :Â
The force on a current-carrying conductor when placed perpendicular in a uniform magnetic field.
a) F=BIL
b) F=B/IL
c) F=L/BI
d) F=I/BL
Correct Answer – (A)
MCQ Class 10 Science Magnetic Effects of Electric Current with Answers
Question 6 :Â
A student makes an arrangement to study electromagnetic induction, as shown.
She changes the arrangement in four different ways.
Trial
- Moves the coil to the left away from the magnet.
- Moves the magnet to the right away from the coil.
- Moves both coil and magnet towards each other.
- Moves both coil and magnet in the same direction at the same speed.
In which trial would the galvanometer remain undeflected?
(a) trial 1
(b) trial 2
(c) trial 3
(d) trial 4
Correct Answer – (D)
Question 7 :Â
Which of the following correctly describes the magnetic field near a long straight wire?
a) The field consists of straight lines perpendicular to the wire
b) The field consists of straight lines parallel to the wire
c) The field consists of radial lines originating from the wire
d) The field consists of concentric circles centred on the wire
Correct Answer – (D)
Question 8 :Â
A soft iron bar is introduced inside a current carrying solenoid. The magnetic field inside a solenoid :
a) decrease
b) Will increase
c) Will become Will zero
d) Will remain unaffected
Correct Answer – (B)
Question 9 :Â
A student inserts a bar magnet in the coil. The student observes deflection in the galvanometer connected to the coil. What will happen if the magnet is continuously getting in and out of the coil?
(a) the current induced in the coil will increase
(b) the current will change its direction continuously
(c) the magnetic field will create a motion in the coil
(d) the magnetic field of the bar magnet would keep decreasing
Correct Answer – (B)
Question 10 :Â
Which option explains Fleming’s left-hand rule to understand the working of a motor?
(a) When a current carrying conductor is moved with a force, it creates the magnetic field.
(b) When a conductor is moved inside a magnetic field, current is produced in the conductor.
(c) When the magnetic field is moved relative to the conductor, current is produced in the conductor.
(d) When a current carrying conductor is placed in a magnetic field, it experiences a force by magnetic field.
Correct Answer – (D)
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