C-11 — Electricity in Daily Life

Which form of energy is most needed in daily life because it illuminates houses and runs fans, TVs and computers?

Proper use of electricity requires —

Why are symbols used while drawing electric circuits?

Which device measures electric current in a circuit?

A variable resistance is also called —

Which instrument is used to measure potential difference?

Which symbol shown in the chapter represents a source of AC current?

Scientifically, a battery is —

Which of the following is NOT a part of a battery cell?

Where is electric energy stored inside the cell?

During chemical reaction in a battery cell, electrons dissipate —

When anode and cathode are connected by a conducting wire, the direction of electron flow is —

Which statement about conventional current in a battery is correct?

The flow of electricity stops in a normal battery cell when —

Mobile phone batteries can be reused because —

Two 1.5 V cells connected in series give a potential of —

Three 1.5 V cells in series produce —

In a series connection of cells —

In parallel connection of cells —

What is the main advantage of connecting cells in parallel?

In a series circuit of bulbs, if more bulbs are added —

In a series circuit with one switch, when the switch is turned off —

In a parallel circuit of bulbs, all bulbs glow with equal brightness because —

An advantage of parallel circuit for bulbs is —

Battery supply is called DC because —

Household electricity is called AC because —

The voltage supplied to houses in Bangladesh is —

Above which voltage can a person feel an electric shock?

Which combination is correct?

Why is series circuit unsuitable for house wiring?

Which circuit system is followed for electric connection in the house?

The colour of the live wire is generally —

The colour of the neutral wire is generally —

The voltage in the live wire is —

The neutral wire has no electric voltage because —

Through which device is the main wire connected with the meter?

The electric energy consumed by the house is recorded by —

Flow of electricity in the entire house can be completely stopped using —

According to the house wiring shown in the chapter, the circuit breaker for lights is —

The circuit breaker rating shown for a fan is —

The circuit breaker rating shown for plug-socket is —

All fuses and power switches in the house should be connected with —

Wires inside walls should be covered with —

Wiring cable connected inside the plaster of a wall is called —

If the load-bearing capacity of a cable is insufficient, at the time of current flow —

The process of separating positive and negative parts of molecules by passing electricity through a solution is called —

The solute that is separated into two parts by passing electricity is called —

During electrolysis, electricity passes through the electrolyte through —

Which of the following is NOT an electrolyte mentioned in the text?

If an atom has fewer electrons than its normal number, it is called —

If the number of electrons is more than normal, the species is called —

Which equation correctly represents ionization of sulphuric acid?

The ionization of $\ce{CuSO4}$ in solution produces —

Which scientist explained electrolysis in 1881?

According to Arrhenius, acids, bases and some salt-like compounds when dissolved in liquid are —

Chemical properties of ions in solution —

At the electrodes during electrolysis —

In the electrolysis of $\ce{CuSO4}$ with copper plates, the $\ce{Cu^{2+}}$ ions attracted by the cathode —

In the electrolysis of $\ce{CuSO4}$, the anode reaction is —

With copper electrodes in $\ce{CuSO4}$ solution, the concentration of the solution —

In electrolysis of $\ce{CuSO4}$ with copper electrodes, the mass change is —

If electrodes other than copper (inert metal) are used in $\ce{CuSO4}$ electrolysis —

Coating of any metal with another suitable metal is called —

Inferior metals like copper, iron and bronze are typically coated with —

In electroplating, the substance to be coated acts as —

In electroplating, the metal that will form the coating is used as —

The special process of electroplating used to make letters and block models is called —

In electrotyping, an impression of the typed text is first taken on —

To make the wax impression conductive, it is —

In electrotyping, the wax mould is used as —

In extraction/purification of metals by electrolysis, the ore is used as —

In purification of metals by electrolysis, the pure metal plate acts as —

The mixture of various metals found in mine is called —

Electrolysis is used in everyday life in —

The SI unit of work and energy is —

Power is defined as —

Electric power is the amount of electrical energy spent or changed into another energy —

The electric power of a device is one watt when —

The relation defining one watt is —

1 kilowatt equals —

1 megawatt equals —

If 1 watt of power flows for 1 hour, the energy consumed is —

1 kilowatt-hour in joules is —

1 kilowatt-hour expressed in megajoules is —

The international unit of electric supply called BOT unit corresponds to —

BOT stands for —

The formula for consumed energy in kilowatt-hours when power $P$ watts is used for $t$ hours is —

A 60 W bulb is used for 5 hours a day for 30 days. The total energy consumed is —

If the rate is 8 taka per unit and 9 units are consumed, the bill becomes —

On a bulb "220 V – 60 W" is written. This means —

In ordinary bulbs, light is produced by —

CFL stands for —

LED stands for —

According to the chapter, energy saving bulbs can save electricity by —

Energy saving bulbs last —

According to the chapter, advantages of energy saving bulbs include —

The full meaning of IPS is —

UPS is mainly used with —

UPS can ensure electric supply within —

The typical activation time of IPS is —

The battery of IPS or UPS provides —

When normal electricity is functioning, the batteries of IPS and UPS —

As soon as main supply stops, what starts the inverter circuit?

About UPS —

System loss in electric distribution lines is caused by —

To reduce system loss while transmitting electricity, electricity is —

Before distributing electricity to consumers, voltage is reduced using —

About system loss —

Load-shedding occurs when —

The electricity produced by all power plants of a country is added to —

Local sub-stations distribute electricity received from —

The first yardstick to measure how developed a country is, is —

For students to study at night and use laboratories and computers, the most essential supply is —

According to the chapter, agriculture needs energy for —

According to the chapter, a likely solution for increased demand of electricity in the country is —

According to the chapter, energy is needed in densely populated areas like Bangladesh for —

Which of the following is the symbol of an ammeter?

In the process of electrolysis coating is given —

IPS —

To reduce the loss during electricity supply —

The function of the neutral wire in a household circuit is to —

Which best defines electrolysis?

One kilowatt-hour means —

If electrodes in $\ce{CuSO4}$ electrolysis are inert metal instead of copper —

Bulbs connected in a parallel circuit glow with equal brightness because —

From the Creative Question 1: Mrs. Monsura uses 5 bulbs of 100 W for 6 hours daily. Her monthly (30 days) consumption is —

From the Creative Question 1: At 5 taka per unit, her monthly bill for 5 × 100 W bulbs running 6 hours/day for 30 days is —

From the Creative Question 1: After replacing with 5 × 20 W energy saving bulbs (6 hours/day, 30 days), her monthly consumption is —

From the Creative Question 2: "220 V – 500 W" on a kettle means at 220 V the kettle converts —

From the Creative Question 2: A fan normally uses a 10 A circuit breaker. If a 15 A circuit breaker is used —