What is a voltmeter ? How is it connected in a circuit ?
What is a voltmeter ? How is it connected in a circuit ?
A voltmeter is a device used to measure potential difference across the two ends of a conductor. It is always connected in parallel in a circuit.
Similar Questions
$(i)$ 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 ?
Name the commercial unit of electrical energy. Convert it into joule. What is the other name of the commercial unit ?
Name the commercial unit of electrical energy. Convert it into joule. What is the other name of the commercial unit ?
Two wires of the same metal have the same length, but cross$-$sections are in the ratio $3: 1 .$ They are joined in series. The resistance of the thicker wire is $10\, ohm.$ The total resistance of the combination will be
Two wires of the same metal have the same length, but cross$-$sections are in the ratio $3: 1 .$ They are joined in series. The resistance of the thicker wire is $10\, ohm.$ The total resistance of the combination will be
In a circuit containing two unequal resistors connected in parallel
In a circuit containing two unequal resistors connected in parallel
$(a)$ Explain how does a cell maintain current in a circuit.
$(b)$ In the circuit given below the resistance of the path $x T y=2\, \Omega$ and that of $x Z y=6, \Omega$.
$(i)$ Find the equivalent resistance between $x$ and $y.$
$(ii)$ Find the current in the main circuit.
$(iii)$ Calculate the current that flows through the path $x T y$ and $x Z y$.
$(a)$ Explain how does a cell maintain current in a circuit.
$(b)$ In the circuit given below the resistance of the path $x T y=2\, \Omega$ and that of $x Z y=6, \Omega$.
$(i)$ Find the equivalent resistance between $x$ and $y.$
$(ii)$ Find the current in the main circuit.
$(iii)$ Calculate the current that flows through the path $x T y$ and $x Z y$.