Hans Christian Oersted
(1777–1851) 
Danish
physicist and chemist,
professor at Copenhagen He 
observed 
that 
compass needle suffers aa
deflection when placed
near a wire carrying an
electric 
current This
discovery gave the first
empirical evidence of a
connection between electric
and magnetic phenomena HANS CHRISTIAN OERSTED  (1777–1851)
Rationalised 2023-24
109
Moving Charges and
Magnetism
E = Q ˆr / (4pe0)r2
(4