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The slope I/V of the graph represents 1/R. Since the graph marked Y has a lesser slope, it represents higher resistance.
Since the length and diameter of the two wires same, using the relation R=ρ l/A the resistivity of wire Y will be higher.

Solution : 

The material which is used for making the heating element is Nichrome.

It consists of a piece of wire made of a metal or an alloy of appropriate melting point, for example aluminium, copper, iron, lead etc.

Nichrome is used for making wire to prepare heating coils. The reason is that its melting point is high and its resistivity is also high.

In the case of semi-conductors like carbon, silicon, germanium, etc., the resistance decreases with increase in temperature. 

ΩM is the S.I. Unit of resistivity

The resistance of connecting wires should be almost negligible. For this thick wires are used. since a thicker wire has a small resistance and the wires are made of copper because the resistivity of copper is low.

Copper and Aluminium are good conductors of electricity and they have less resistance. Hence they are used in electricity transmission.

Correct option is A) CFLS

I = \(\frac{Q}{t}\)

Charge Q = ? 

Charge I = 0.5 A 

Time = 1 hour 

= 60 × 60 s

Q = It 

= 0.5 × 3600 

= 1800 C 

The amount of electric charge flowing = 1800 C

Solution : 

Copper has free electrons that are loosely held by the nuclei of the atoms. These free electrons result in conduction of electricity. The electrons present in rubber are strongly held by the nuclei of its atoms. So, rubber does not have free electrons to conduct electricity.

One kilowatt hour = 1000 W hr

1 kWh = 3.6 × 10⁶ J

(b) Volt ampere ^-1

The correct option is A) 1000 watts.

V = 220V, I = 0.5 amp, P = ?

We know that

P = VI = 220 X 0.5

P = 110 watt.

V=220V, I=0.5amp, P=? 

We know that P=VI=220X0.5 P=110 watt.

Correct answer is (a) 1 V

Correct answer is (c) Ampere

(1) 

Let R be the resistance of the electric lamp. In series total resistance = 5 + R 

I = v/r 

1 = 10/5 + R 

R = 5 ohm 

2) V across Lamp + conductor = 10 V

V across Lamp = I × R 

= 1 x 5 

= 5 Volt

Correct answer is (a) ampere

Power of the bulb,

P = l²R = (1)² x 200

⇒ P = 200 W

Energy consumed by bulb in 5h in burning 

= Power x Time 

= 200 x 5 

= 1000 Wh = 1 kWh

Solution : 

 Travels through the wires when you switch on a light is Electrons.

Solution :

The particles constitute the electric current in a metallic conductor is Electrons

Solution : 

(a) An electric currrent is a flow of electric charges (electrons) through a conductor. Potential difference between the ends of the wire makes electric current to flow in the wire. 

(b) When 1 coulomb of charge flows through any cross-section of a conductor in 1 second, the electric current flowing through it is said to be 1 ampere.

P = VI
V = 220V, and I = 5A.
Power P = 220 × 5 = 1100 W
Power of the motor = P × t
P = 1100 W.
t = 2 Hr 2 × 60 × 60 W
= 7200 S
∴ Energy consumed, E = 1100 × 7200 J
= 7920000
= 7.92 × 10⁶J.

The answer is (d) nature of the material

The answer is (b) same current flowing through them when connected in series

In series combination current does not get divided into branches because resistor receives a common current.

When the switch is in off position, bulb does not glow. Because the circuit is opened.

Zinc plate, copper plate, a small bulb, or LED, connecting wires, crocodile dips, and lemons.

We know that for an electric appliance

P = \(\frac{V^2}{R}\)

Resistance will be given as

R = \(\frac{V^2}{P}\)

Now, here 

P = 100 W 

V = 200 volts

So, R = \(\frac{200^2}{100}\)

R = \(\frac{40000}{100}\) 400Ω

Thus, resistance of the bulb is R = 400 Ω 

Now, electric energy consumed will be 

E = power of each unit × time. 

⇒ E = p × t. 

Here 

P = 100 W 

t = 4 hours 

So, 

E = 100 x 4 = 400 Watt per hour 

Dividing by 1000 to convert into Kilo Watt per hour 

E = \(\frac{400}{1000}=0.4\) kWh 

Electrical energy consumed is 0.4 kWh 

The total cost of electricity = total unit of energy consumed x cost per unit = Cost = 0.4kWh x 4 Rs/kWh = Rs1.6 

Thus, total cost (daily) = Rs. 1.6