MCQ Questions

Question No. 1

State True or False and correct the false statements giving reasons.

Answer :

(1) A fuse wire must have high resistance and high melting point.

(2) High star rating of an electrical appliance indicates lower power consumption.

(3) The neutral wire in a live circuit can give a shock.

(4) A thicker fuse wire keeps the appliances safe.

(5) Opposite charges develop when we rub two non-conducting materials.

(6) An atom is neutral because it has neutrons.

(7) When an ebonite rod is rubbed with fur protons move out to the fur.

(9) Lightning is caused by electrical discharge between charged clouds.

(8) If there is lightning and thunder it is better to stay indoors.

(10) The sharp points of the lightning conductor are made of glass.

Question No. 2

Fill in the blanks

Question No. 3

Short answer type questions

Question No. 4

Long answer type questions

Question No. 5

Match the column

Answer :

Question No. 6

Conventionally the direction of movement of electrical current in a circuit is pointed as :

Answer :

Negative terminal to positive terminal

Negative terminal to Earth

Earth to positive terminal

Positive terminal to negative terminal

Question No. 7

The meter reading on our electricity bill is written in:

Answer :

Volts

Amperes

Kilowatt-hours

Ohms

Question No. 8

When we rub an ebonite rod on fur the rod develops negative charge indicating:

Answer :

Movement of electron from the rod to the fur.

Movement of electrons from the fur to the rod.

Movement of protons from the rod to the fur

Movement of protons from the fur to the rod.

Question No. 9

If the leaves of a negatively charged electroscope collapse upon touching by a rod, the rod must be:

Answer :

Uncharged

Positively charged

Negatively charged

Uncharged or positively charged

Question No. 10

The difference between a conductor and an insulator is :

Answer :

Conductors are made of hard material, insulators are made of soft material.

Conductors have free electrons; insulators have very few free electrons.

Insulators can be charged by conduction but not conductors.

Few conductors are metals but all insulators are non-metals.

Question No. 11

When an electrical switch is put off it disconnects the

Answer :

Fuse wire

Earth wire

Neutral wire

Live wire

Question No. 12

We can generate static electricity by friction on:

Answer :

Insulators

Conductors

Both insulators and conductors

Combination of insulators and conductors

Question No. 13

A metal comb cannot be charged by rubbing on the hair even in dry weather because:

Answer :

It is too heavy on the hair

It has pointed bristles

It will conduct any charge that develops

It has no free electrons

Question No. 14

Conventionally the direction of movement of electrical current in a circuit is pointed as :

Answer :

Negative terminal to positive terminal

Negative terminal to Earth

Earth to positive terminal

Positive terminal to negative terminal

Question No. 15

The meter reading on our electricity bill is written in:

Answer :

Volts

Amperes

Kilowatt-hours

Ohms

Question No. 16

The red or brown coloured wire is always the :

Answer :

Earth wire

Neutral wire

Live wire

Fuse wire

Question No. 17

Which of the following statements is true about charging by induction?

Answer :

In induction charging, the charging body should touch very lightly.

Opposite charge develops at the far end of the conductor to be charged.

Only bodies made of non-conducting material can be charged by induction.

Same charge develops at the far end of the conductor to be charged.

Chapter

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