Magnetic Effects of Electric Current Class 10 Science MCQs
As per the new CBSE pattern, MCQs have considerable weightage in the CBSE Board Exams. If you want to ace this exam, you must practice MCQs. It is one of the most integral parts of the CBSE board exam. Answering Chapter 13 Magnetic Effects of Electric Currents MCQs mandates solid learning, critical thinking, regular practice, a lot of hard work and dedication.These MCQs for Class 10 Science Magnetic Effects of Electric Currents With Answers are designed as per the latest syllabus and exam pattern issued by CBSE which gives an idea about the CBSE exam level. Students must practice these Chapter 13 Magnetic Effects of Electric Currents MCQs to know their performance level and work on the weaker topics and score good marks in the exam.
Magnetic Effects of Electric Current Class 10 MCQs Questions with Answers
1) The strength of the magnetic field inside a long current carrying a straight solenoid is
- more at the ends than at the centre
- minimum in the middle
- same at all points
- found to increase from one end to the other
Answer: C
2) The direction of current in the coil at one end of an electromagnet is clockwise. This end of the electromagnet will be:
- North pole
- East pole
- South pole
- West pole
Answer: C
3) The essential difference between an AC generator and a DC generator is that:
- AC generator has an electromagnet while a DC generator has a permanent magnet
- DC generator will generate a higher voltage
- AC generator will generate a higher voltage
- AC generator has slip rings while the DC generator has a commutator
Answer: C
4) A magnet is moved towards a coil (i) quickly (ii) slowly. The induced potential difference
- more in (i) than in (ii) case
- more in (ii) than in (i) case
- same in both
- can’t say
Answer: A
5)Which of the following statement is or are correct?
- A motor is a device which converts electrical energy to mechanical energy. [B] [C] [D]
- A motor works on the principle that when a rectangular coil is placed in a magnetic field and current is passed through it a force exerted on the coil which rotates it continuously.
- Commutator rings reverse the direction of current flowing through the coil after every half rotation of the coil.
- All the above.
Answer: D
6) A current carrying conductor is held in exactly vertical direction. In order to produce a clockwise magnetic field around the conductor, the current should be passed in the conductor:
- From top to bottom
- From left to right
- From bottom to top
- From right to left
Answer: A
7) The wire with green insulation is the
- Earth Wire
- Neutral Wire
- Live Wire
- None
Answer:A
8) Which of the following properties of a proton can change when it moves freely in a magnetic field
- Mass
- Speed
- Velocity
- Momentum
Answer: C
9) The direction of induced current is given by
- Fleming’s Right Hand Rule
- Fleming’s Left Hand Rule
- Right Hand Thumb Rule
- Left hand Thumb Rule
Answer: A
10) The best material to make permanent magnets is
- aluminium
- soft iron
- copper
- alnico
Answer: D
11) 1 Tesla is equal to:
- 1 Weber/m2
- 1 Gauss
- 10-4 Weber/m2
- 10-4 Gauss.
Answer: A
12) The force experienced by a current-carrying conductor placed in a magnetic field is the largest when the angle between the conductor and the magnetic field is:
- 45
- 60
- 90
- 180
Answer: C
13) Overloading is due to
- Insulation of wire is damaged
- Fault in the appliances
- Accidental hike in supply voltage
- All of the above
Answer: D
14) Which of the following statement is not correct about the magnetic field?
- Magnetic field lines form a continuous closed curve.
- Magnetic field line do not interest each other.
- The direction of the tangent at any point on the magnetic field line curve gives the direction of the magnetic field at that point.
- Outside the magnet, magnetic field lines go from the South to the North pole of the magnet.
Answer: D
15) What happens to the current in a short circuit?
- reduces substantially
- does not change
- increases heavily
- vary continuously
Answer: C
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