13. A coll of insulated wire is connected in
series with a bulb, a battery and a
switch. When the circuit is completed,
the bulb lights up immediately. The
circuit is switched off and a rod of soft
iron is placed inside the coil. On
completing the circuit again, it is
observed that?
a. The bulb is not so bright
There is a slight delay before the bulb
lights up to its normal brightness
C! The bulb is initially bright but gradually
becomes dim
d. The bulb is brighter than before
Answers
Answered by
1
Answer:
d
Explanation:
because iron rod placed have some induced current when placed in complete circuit
Answered by
0
Answer:
A is the correct answer due to inductance
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