What is the resistance of an ideal ammeter ?
Draw the nature of $V -I$ graph for a nichrome wire. $(V -$ Potential difference, $I -$ Current)
$A$ metallic wire of $625\, mm$ length offers a $4\, \Omega$ resistance. If the resistivity of the metal is $4.8 \times 10^{-7} \,ohm-metre$, then calculate the area of cross$-$ section of the wire.
Derive the relation $R=R_{1}+R_{2}+R_{3}$ when three resistors $R_{1}, R_{2}$ and $R_{3}$ are connected in series in an electric circuit.
The flow of charge through a conducting wire connected to a cell is the result of chemical reaction inside the cell.
Battery is a source of maintaining a constant potential difference across two ends of a conductor.