NCERT Science Class 10 Chapter 13 Magnetic effects of electric current CBSE Board Sample Problems Multiple Choice Question
Glide to success with Doorsteptutor material for CBSE : fully solved questions with step-by-step explanation- practice your way to success.
Question
At the time of short circuit, the current in the circuit
1. Vary continuously
2. Reduced considerably
3. Increases heavily
4. Does not change
Question
Magnetic field lines determine
1. The shape of magnetic field
2. Only the direction of magnetic field
3. Only the relative strength of the magnetic field
4. Both the direction and the relative strength of magnetic field
Question
While applying Fleming’s right- hand rule the central (middle) finger of right hand indicates
1. The direction of magnetic field
2. The direction of rotation of conductor
3. The direction of current being flown
4. The direction of induced current
Question
Fuse wire should be prepared from a material having
1. High conductivity and high melting point
2. High conductivity and low melting point
3. Low conductivity and high melting point
4. Low conductivity and low melting point
Question
At the time of short circuiting of an electrical circuit the current in the circuit
1. Is substantially reduced
2. Abruptly increases
3. Changes continuously
4. Does not change at all
Question
An electron moves with a speed y along positive direction of x-axis. IF a magnetic field B acts along the positive y-direction, then the force on the electron will act along direction of x-axis. IF a magnetic field B acts along the positive y-direction, then the force on the electron will
1. X-axis
2. Y-axis
3. -ve z-direction
4. +ve z-direction
Question
The direction of magnetic field developed around a current-carrying conductor can be easily found by the use of
1. Right hand thumb rule
2. Left hand thumb Rule
3. Fleming’s left-hand rule
4. Fleminci’s right-hand rule
Question
The strength of magnetic field due to a solenoid depends on the
1. Number of turns
2. Current through it
3. Material of core
4. All of these
Question
The electric current that reverses its direction after a fix interval of time, is called
1. Alternating current
2. Electromagnetic current
3. Direct current
4. Induced current
Question
In each of the following questions, a statement of Assertion is given by the corresponding of
Reason. Of the statements, marks the correct answer as
Assertion: Iron filings arrange themselves in definite pattern when sprinkled around a bar magnet.
Reason: Definite pattern when a sprinkled around a bar magnet of iron filings, due magnetic effect around a bar magnet.
1. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
2. If both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
3. If Assertion is true, but Reason is false.
4. If Assertion is false but Reason is true.