Conductors and Insulators

Jawad is hot and sweaty. He touches some bare connecting wire of a fan where the plastic insulation has worn away. What happens to Jawad? List the factors that caused this to happen.

Why can plants, animals and humans conduct electricity?

How is tap water different from pure water?

Which materials (A, B, C, D) are electrical conductors and which materials are electrical insulators?

Predict whether the lamp will light up in each of the following circuits. Write 'Yes' or 'No' alongside each circuit.

Circuit	Lamp will light up

Identify the objects 1-6 in the picture. Identify the material each is made from. Fill the answers in the columns of this table. Write Yes in columns for electrical conductor or insulator.

Write a sentence to explain what an electrical insulator is.

Electrical _____ is a material that allows electricity to pass through it.

The best conductor of electricity among the following is:

The best electrical conductor among the following is

Molecules are held together by weak intermolecular forces in molecular solids.

Which of the following are electrical insulators?

True or False, if false correct the statement.

Metals are generally good conductors of electricity, but not good conductors of heat.

Which of the following is not a good conductor?

Which one of the following will have a low heat of fusion?

Metal which is the best conductor of heat among the following is:

(Copper / Bismuth / Titanium)

The aqueous solution of an ionic compound conducts electricity because there are plenty of free electrons in the solution.

The closed structure of co-axial cable prevents inner copper wire or core from radiating signal power. The statement is

In the circuit shown, the cells $A$ and $B$ have negligible resistances. For $V_A = 12 \mathrm{V}$, $R_1=500 \mathrm{\Omega }$ and $R=100 \mathrm{\Omega }$, the galvanometer $\left(G\right)$ shows no deflection. The value of $V_B$ is

          

In the circuit shown in figure, the current in $4 \mathrm{\Omega }$resistance is $1.2 \mathrm{A}$. What is the potential difference between $B \mathrm{and} C$?