Magnetic Effects of Electric Current Practice Questions
Class 10 · Science · 3072 free MCQs with instant results and detailed explanations.
3072
Total
1004
Easy
1545
Medium
523
Hard
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Topics in Magnetic Effects of Electric Current
Electromagnet
754
Electric Motor
764
Electromagnetic Induction
786
Magnetic Field
768
Sample Questions from Magnetic Effects of Electric Current
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What is the shape of the magnetic field around a straight conductor carrying current?
A.
Circular
B.
Elliptical
C.
Straight
D.
Random
Show Answer & Explanation
Correct Answer: A
The magnetic field around a straight conductor carrying current is circular, forming concentric circles around the wire.
Q2
Easy
Which device uses the magnetic effect of electric current to measure current?
A.
Voltmeter
B.
Ammeter
C.
Galvanometer
D.
Resistor
Show Answer & Explanation
Correct Answer: C
A galvanometer uses the magnetic effect of electric current to measure small currents.
Q3
Easy
What happens to the magnetic field when the current in a coil is increased?
A.
It decreases
B.
It stays the same
C.
It becomes weaker
D.
It becomes stronger
Show Answer & Explanation
Correct Answer: D
Increasing the current in a coil increases the strength of the magnetic field around it.
Q4
Medium
What is the direction of the magnetic field around a current-carrying wire?
A.
From North to South
B.
Circular around the wire
C.
Straight towards the wire
D.
Randomly oriented
Show Answer & Explanation
Correct Answer: B
The magnetic field around a current-carrying wire forms circular loops centered on the wire.
Q5
Medium
What happens to the magnetic field direction if the current in a wire is reversed?
A.
It stays the same
B.
It becomes zero
C.
It reverses direction
D.
It oscillates
Show Answer & Explanation
Correct Answer: C
Reversing the current direction in a wire reverses the direction of the magnetic field around it.
Q6
Medium
Which device uses the magnetic effects of electric current to function?
A.
Buzzer
B.
Resistor
C.
Capacitor
D.
Diode
Show Answer & Explanation
Correct Answer: A
A buzzer uses the magnetic effects of electric current to produce sound when current flows through it.
Q7
Medium
If two parallel wires carry currents in the same direction, what is the effect on the wires?
A.
They repel each other
B.
They attract each other
C.
No effect on each other
D.
They oscillate
Show Answer & Explanation
Correct Answer: B
Two parallel wires carrying currents in the same direction will experience an attractive force towards each other due to their magnetic fields.
Q8
Hard
What is the shape of the magnetic field lines around a straight current-carrying conductor?
A.
Straight lines
B.
Circular loops
C.
Elliptical
D.
Spirals
Show Answer & Explanation
Correct Answer: B
The magnetic field lines around a straight conductor are circular loops, indicating that the field is perpendicular to the direction of current flow.
Q9
Hard
If the current in a solenoid is doubled, what happens to the magnetic field strength inside the solenoid?
A.
It remains the same
B.
It doubles
C.
It quadruples
D.
It halves
Show Answer & Explanation
Correct Answer: B
The magnetic field strength inside a solenoid is directly proportional to the current flowing through it. If the current is doubled, the field strength also doubles.
Q10
Hard
What effect does inserting an iron core into a solenoid have on the magnetic field?
A.
Reduces the field strength
B.
Increases the field strength
C.
Has no effect
D.
Reverses the field direction
Show Answer & Explanation
Correct Answer: B
Inserting an iron core increases the magnetic field strength due to the higher magnetic permeability of iron compared to air.
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Magnetic Effects of Electric Current — Class 10 Science Practice Questions Online
This page contains 3072 practice MCQs for the chapter Magnetic Effects of Electric Current in Class 10 Science. The questions are organized by difficulty — 1004 easy, 1545 medium, 523 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 4 topics, giving you comprehensive coverage of the entire chapter.