Since a current will produce a magnetic field around it, if we put a good-conduc
ID: 1716787 • Letter: S
Question
Since a current will produce a magnetic field around it, if we put a good-conducting wire connected in parallel with a 50- load in a magnetic field then
a. Surely there will be an electric current flowing through the load
b. There will be an electric current flowing through the load only if we bend the wire to a circular shape
c. There will be an electric current flowing through the load only if the magnetic field is varying
d. There will be an electric current flowing through the load only if the magnetic field is strong enough
Explanation / Answer
In order that the load carry current the magnetic field produced by conductor should link with it and it should be time varying.
since to produce an emf in the load there should be relative motion between load and field,here load is stationary therefore magnetic field should vary
option c is true