$(a)$ What is an electric circuit ?
$(b)$ Calculate the number of electron that flow per second to constitute a current of one ampere. Charge on an electron is $1.6 \times 10^{-19} C$.
$(c)$ Draw an electric circuit for studying Ohm's law. Label the circuit component used to measure electric current and potential difference.
$(a)$ What is an electric circuit ?
$(b)$ Calculate the number of electron that flow per second to constitute a current of one ampere. Charge on an electron is $1.6 \times 10^{-19} C$.
$(c)$ Draw an electric circuit for studying Ohm's law. Label the circuit component used to measure electric current and potential difference.
$(a)$ It is a continuous and closed path in which an electric current can flow.
$(b)$ We know that $I=Q / t$ and $Q=n e,$ where $n$ is the number of electron and $e$ is the charge on the electron. Therefore, we have
$I =n e / t$
or $n=I t / q=1 \times 1 / 1.6 \times 10^{-19}$
$=6.25 \times 10^{18}$ electrons.
$(c)$ The circuit diagram used to study $Ohm's$ law is as shown
Electric current : Ammeter $(A)$
Potential difference : Voltmeter $(V).$
Similar Questions
Name the device$/$instrument used to measure potential difference. How is it connected in an electric circuit ?
Name the device$/$instrument used to measure potential difference. How is it connected in an electric circuit ?
A potential difference $V$ is applied across a conductor of length $L$ and diameter $D .$ How is the resistance $R$ of the conductor affected, when in turn $(i)$ $V$ is halved $(ii)$ $L$ is halved and $(iii)$ $D$ is doubled ? Justify your answer in each case.
A potential difference $V$ is applied across a conductor of length $L$ and diameter $D .$ How is the resistance $R$ of the conductor affected, when in turn $(i)$ $V$ is halved $(ii)$ $L$ is halved and $(iii)$ $D$ is doubled ? Justify your answer in each case.
What is the unit of electric potential difference?
What is the unit of electric potential difference?
A current of $0.5\, A$ is drawn by a filament of an electric bulb for $10$ minutes. Find the amount of electric charge that flows through the circuit.
A current of $0.5\, A$ is drawn by a filament of an electric bulb for $10$ minutes. Find the amount of electric charge that flows through the circuit.
What is the unit of electric current?
What is the unit of electric current?