Electric Current And Its Effects Mock Tests

21 questions available

Electric Current And Its Effects Mock Test 1

Questions: 21

Sample Questions

Class 8 Science

When a current-carrying solenoid is placed near iron pins, they:

A Fly away

B Get attracted and stick to the solenoid

C Rotate around the solenoid

D Remain unaffected

Class 8 Science

An electromagnet is formed when electric current passes through:

A A copper wire wrapped around an iron core

B A rubber band stretched between two points

C A glass rod heated in a flame

D A plastic coil connected to a battery

Class 8 Science

When an electric current flows through a wire wrapped around an iron core, the arrangement acts as:

A A permanent magnet

B An electromagnet

C A battery

D A resistor

Class 8 Science

When a current-carrying wire is placed near a compass needle, the needle deflects because:

A The wire becomes hot and affects the needle

B A magnetic field is created around the current-carrying wire

C Electric charges repel the needle

D The wire produces light that affects the needle

Class 8 Science

When current-carrying wire is placed near a compass needle, the needle:

A Remains unaffected

B Gets deflected

C Heats up

D Becomes magnetized permanently

Class 8 Science

When an electric current passes through a wire wrapped around an iron nail, the nail becomes a:

A Permanent magnet

B Electromagnet

C Battery

D Conductor only

Class 8 Science

Which of the following is produced when an electric current flows through a wire wrapped around an iron nail?

A Light

B Sound

C Magnetic field

D Chemical change

Class 8 Science

When a compass is placed near a current-carrying wire, the needle deflects because:

A The wire becomes hot

B Electric current creates a magnetic field

C The wire becomes charged

D The current repels the needle

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