Magnetic Effects Of Current

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Description

This mock test of Magnetic Effects Of Current - 1 for Class 10 helps you for every Class 10 entrance exam. This contains 10 Multiple Choice Questions for Class 10 Magnetic Effects Of Current - 1 (mcq) to study with solutions a complete question bank. The solved questions answers in this Magnetic Effects Of Current - 1 quiz give you a good mix of easy questions and tough questions. Class 10 students definitely take this Magnetic Effects Of Current - 1 exercise for a better result in the exam. You can find other Magnetic Effects Of Current - 1 extra questions, long questions & short questions for Class 10 on EduRev as well by searching above.

QUESTION: 1

An electric motor converts

A.
Mechanical energy into electrical energy
B.
Electrical energy into sound energy
C.
Electrical energy into mechanical energy
D.
Mechanical energy into sound energy

Solution:

An electric motor converts electrical energy into mechanical energy.

QUESTION: 2

Overloading is due to

A.
Insulation of wire is damaged
B.
Fault in the appliances
C.
Accidental hike in supply voltage
D.
All of the above

Solution:

Overloading occurs when there is any fault in the appliances or the insulation of wire got damaged. It also occurs when there is sudden hike in supply voltage.

QUESTION: 3

In Fleming’s left-hand rule the thumb indicates the direction of

A.
Magnetic field applied
B.
Current flown in the conductor
C.
Induced current
D.
Mechanical force on the conductor

Solution:

In Fleming’s left-hand rule the thumb indicates the direction of mechanical force acting on the conductor. The forefinger points in the direction of magnetic field and the central finger in the direction of current flowing in the conductor.

QUESTION: 4

Which among of these are the main characteristics of fuse element?

A.
High conductivity
B.
Low melting point
C.
Do not burn due to oxidation
D.
All of the above

Solution:

Fuse wire must have high conductivity, low melting point and it do not burn due to oxidation. These characteristics of a fuse wire make it possible to prevent from damages.

QUESTION: 5

The phenomenon of electromagnetic induction is

A.
The process of charging a body
B.
The process of generating a magnetic field due to current passing through a coil
C.
The process of producing induced current in a coil on changing magnetic field around it
D.
The process of rotating a coil of an electric motor

Solution:

Electromagnetic induction is the phenomenon due to which an induced current is set up in a coil when magnetic field around it, is changed.

QUESTION: 6

The main advantage of A.C power transmission over D.C power transmission over long distance is

A.
AC transmit without much loss of energy
B.
Less insulation problem
C.
Less problem of instability
D.
Easy transformation

Solution:

AC transmit over a long distance without much loss of energy as compare to DC.

QUESTION: 7

The device used to produce an electric current in a circuit is called

A.
Galvanometer
B.
Electric generator
C.
Electric motor
D.
Inverter

Solution:

An electric generator is used to produce an electric current in a circuit.

QUESTION: 8

Earth wire carries

A.
Current
B.
Voltage
C.
No current
D.
Heat

Solution:

A "grounding" wire on the other hand is a safety wire that has intentionally been connected to earth. The grounding wire does not carry electricity under normal circuit operations. It's purpose is to carry electrical current only under short circuit or other conditions that would be potentially dangerous.