An electron in a metal is free to move anywhere but cannot leave the metal.
An electron in a metal is free to move anywhere but cannot leave the metal.
True
Similar Questions
$(a)$ Calculate the resistance of the wire using the graph.
$(b)$ How many $176 \,\Omega$ resistors in parallel are required to carry $5\, A$ on a $220\, V$ line ?
$(c)$ Define electric power. Derive relation between power, potential difference and resistance.
$(a)$ Calculate the resistance of the wire using the graph.
$(b)$ How many $176 \,\Omega$ resistors in parallel are required to carry $5\, A$ on a $220\, V$ line ?
$(c)$ Define electric power. Derive relation between power, potential difference and resistance.
How would the reading of voltmeter $(V)$ change, if it is connected between $B$ and $C$ ? Justify your answer.
How would the reading of voltmeter $(V)$ change, if it is connected between $B$ and $C$ ? Justify your answer.
What is meant by resistance of a conductor ? Name and define its $SI$ unit. List the factors on which the resistance of a conductor depends. How is the resistance of a wire affected if
$(i)$ its length is doubled,
$(ii)$ its radius is doubled. ?
What is meant by resistance of a conductor ? Name and define its $SI$ unit. List the factors on which the resistance of a conductor depends. How is the resistance of a wire affected if
$(i)$ its length is doubled,
$(ii)$ its radius is doubled. ?
Find the number of electrons transferred between two points kept at a potential difference of $20\, V$ if $40\, J$ of work is done.
Find the number of electrons transferred between two points kept at a potential difference of $20\, V$ if $40\, J$ of work is done.
$(i)$ Draw a circuit diagram to show how two resistors are connected in series.
$(ii)$ In a circuit, if the two resistors of $5$ ohm and $10$ ohm are connected in series, how does the current passing through the two resistors compare ?
$(i)$ Draw a circuit diagram to show how two resistors are connected in series.
$(ii)$ In a circuit, if the two resistors of $5$ ohm and $10$ ohm are connected in series, how does the current passing through the two resistors compare ?