Explain with a neat diagram the coil-coil experiment demonstrating electromagnetic induction.
Explain with a neat diagram the coil-coil experiment demonstrating electromagnetic induction.
Consider the coils placed coaxially as shown in diagram.
P → Primary coil
S → Secondary coil
A current can be established in P by means of a battery B and a key ‘K’. S is connected to a sensitive galvanometer G. Current in P produces a magnetic field in the region of S.
Observations:––––––––––––––––
(a) When the key is closed, a deflection is observed in the galvanometer.
(b) When the key is opened, a deflection is observed in galvanometer (opposite deflection).
(c) If the key is closed and a relative motion is caused between the P and S, then there is a deflection, whose direction depends upon the coils approaching or receding.
(d) Jerky motion of coils produces large deflection.
(e) If the current is steady and P and S are stationary, no deflection is observed in the galvanometer.
(f) Induction of an iron rod into S increases the above effects appreciably.
Consider the coils placed coaxially as shown in diagram.
P → Primary coil
S → Secondary coil
A current can be established in P by means of a battery B and a key ‘K’. S is connected to a sensitive galvanometer G. Current in P produces a magnetic field in the region of S.
Observations:––––––––––––––––
(a) When the key is closed, a deflection is observed in the galvanometer.
(b) When the key is opened, a deflection is observed in galvanometer (opposite deflection).
(c) If the key is closed and a relative motion is caused between the P and S, then there is a deflection, whose direction depends upon the coils approaching or receding.
(d) Jerky motion of coils produces large deflection.
(e) If the current is steady and P and S are stationary, no deflection is observed in the galvanometer.
(f) Induction of an iron rod into S increases the above effects appreciably.
