Solar cookers use solar energy for cooking food. It converts solar energy into heat energy. All other appliances use electrical energy.

The Electromotive Force (EMF) of a cell is equal to the potential difference between the two poles (terminals) of the cell in an open circuit when no current is being drawn from the cell.

James Clerk Maxwell was the one who unified electromagnetism and optics by identifying light as an electromagnetic wave.

Diamond is an electrical insulator, whereas Graphite, Copper, and Silver are good conductors of electricity. Silver is the best conductor of heat and electricity.

The phenomenon of generating electromotive force between the ends of a conductor by placing it in a changing magnetic field is called Electromagnetic induction.

The SI unit for measuring potential difference is Volt.

The SI unit of electric current is Ampere.

The working principle of an electric generator is based on the principle of electromagnetic induction proposed by Michael Faraday.

Alternating current (AC) is initially generated in the armature of a DC generator, which is later converted to DC by a commutator.

When rubbed, electrons transfer from the glass rod to the silk cloth. Because it loses electrons, the glass rod becomes positively charged.

The filament of an electric bulb is made of tungsten metal. The filament is placed inside a glass bulb so that atmospheric oxygen does not reach the overheated filament and weaken it through oxidation.

Pure water is an insulator of electricity, while saline water (saltwater) is a conductor of electricity due to the presence of ions.

Formula: I = q/t, where I=10 A, t=1 hour = 3600 seconds. Therefore q = I * t = 10 * 3600 = 36000 = 3.6 x 10^4 Coulomb.

According to Faraday's law of electromagnetic induction, the induced electromotive force ($e$) in a coil is proportional to the rate of change of magnetic flux ($d\phi/dt$) linked with the coil ($e \propto -d\phi/dt$). Therefore, when the rate of change of flux is maximum, the induced EMF is also maximum.

Fuse wire is made of a material that has high resistance and low melting point, so that when excessive current flows in the circuit, it heats up, melts, and breaks the circuit. The fuse wire is always connected in series with the live (phase) wire. Therefore, both statements are true.

According to Fleming's right-hand rule, if we arrange the thumb, middle finger, and index finger of the right hand perpendicular to each other, the thumb indicates the direction of the magnetic force, the middle finger indicates the direction of the induced current, and the index finger indicates the direction of the magnetic field. Fleming's right-hand rule shows the direction of the induced current.

Electrical energy consumed $= \frac{60 \times 5 \times 30}{1000} = \frac{9000}{1000} = 9$ units.

The working principle of an electric motor is based on the magnetic effect of electric current, which is often discussed in the context of electromagnetic induction.

Electricity consumption = $\frac{100 \times 10}{1000} = 1$ KWh (unit).

The resistance of a fuse wire should be high (so it should be thin). If it is thick (sthul), its resistance will be low, and it will not melt easily.