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Olympiad Test: Electric Current & its Effects


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20 Questions MCQ Test Science & Technology for UPSC CSE | Olympiad Test: Electric Current & its Effects

Olympiad Test: Electric Current & its Effects for UPSC 2022 is part of Science & Technology for UPSC CSE preparation. The Olympiad Test: Electric Current & its Effects questions and answers have been prepared according to the UPSC exam syllabus.The Olympiad Test: Electric Current & its Effects MCQs are made for UPSC 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Electric Current & its Effects below.
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Olympiad Test: Electric Current & its Effects - Question 1

A ____________ is used in torches.

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 1

A dry cell is used in torches and other devices that are mobile.

Olympiad Test: Electric Current & its Effects - Question 2

MCB in electric circuit stand for

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 2

MCB is electric circuit stands for miniature circuit breaker used to break circuit in case of excess of current.

Olympiad Test: Electric Current & its Effects - Question 3

Electromagnet is used in

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 3

Electromagnet is used in electric bell. When switch is closed the, current flows and electric bell works.

Olympiad Test: Electric Current & its Effects - Question 4

Electric current is measured by a device

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 4

Electric current is measured by a device called ammeter. It is always connected in series in circuit.

Olympiad Test: Electric Current & its Effects - Question 5

Fuse wire is made up of alloys of

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 5

Fuse wire is made up of alloys of low melting point that melts if higher current flows through the circuit.

Olympiad Test: Electric Current & its Effects - Question 6

Coils of heating devices are made up of

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 6

The coils of heating devices are made up of Nichrome, which is an alloy having very high resistance and high melting point.

Olympiad Test: Electric Current & its Effects - Question 7

Wire carrying current produce attracts the magnetic material due to

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 7

Wire carrying current produce attracts the magnetic material due to magnetic field.

Olympiad Test: Electric Current & its Effects - Question 8

A material having very high resistance is called

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 8

A material having very high resistance is called an insulator.

Olympiad Test: Electric Current & its Effects - Question 9

Potential difference is created in a electric circuit due to

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 9

Potential difference is created in an electric circuit due to cell or battery.

Olympiad Test: Electric Current & its Effects - Question 10

Heating effect of electric current is used in

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 10

Heating effect of electric current is used in bread toaster having coils of high resistance and melting point.

Olympiad Test: Electric Current & its Effects - Question 11

Fuse wire is used in electric circuit to prevent

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 11

Fuse is a safety device that is used in electric circuit to prevent electrical appliances and circuit in case of very high current.

Olympiad Test: Electric Current & its Effects - Question 12

The metal which is poor conductor of electricity is

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 12

All metals are good conductor of electricity but mercury is poor conductor of electricity.

Olympiad Test: Electric Current & its Effects - Question 13

A device that break the electric circuit in case of excess current is called

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 13

A device that breaks the electric circuit in case of excess of current is called fuse wire.

Olympiad Test: Electric Current & its Effects - Question 14

Which of the following metal is best conductor of electric current?

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 14

Silver metal is best conductor of electric current out of all metals due to very high resistivity.

Olympiad Test: Electric Current & its Effects - Question 15

A device that converts the electrical energy into heat energy is

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 15

Heater is a device that converts the electric energy into heat energy.

Olympiad Test: Electric Current & its Effects - Question 16

Nichrome is used a coil of heater because

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 16

Nichrome is used in coil of heater because it has high resistance and high melting point.

Olympiad Test: Electric Current & its Effects - Question 17

Combination of two or more cell in series is called

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 17

Combination of two or more cell in series is called battery. Battery creates potential difference to flow current.

Olympiad Test: Electric Current & its Effects - Question 18

Closed and continuous path of electric current is called

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 18

Closed and continuous path of electric current is called electric circuit.

Olympiad Test: Electric Current & its Effects - Question 19

Coming together of live wire and fuse wire in a circuit is called

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 19

When live wire and neutral wire of a circuit come together, short circuit occurs to increase the temperature of circuit.

Olympiad Test: Electric Current & its Effects - Question 20

In electrical wiring, the wire with black insulation is usually

Detailed Solution for Olympiad Test: Electric Current & its Effects - Question 20

In electrical wiring, the wire with black insulation is usually neutral wire and red insulation with live wire.

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