The resistance of a wire of iron is and temp. coefficient of resistance is
At
it carries
of current. Keeping constant potential difference between its ends, the temperature of the wire is raised to
The current in
that flows in the wire is
The resistance of a wire of iron is and temp. coefficient of resistance is
At
it carries
of current. Keeping constant potential difference between its ends, the temperature of the wire is raised to
The current in
that flows in the wire is