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Class 8-9-10, JEE & NEET
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A solenoid is connected to a battery so that a steady current flows through it. If an iron core is inserted into the solenoid, will the current increase or decrease? Explain.
When an iron core is inserted into the solenoid, the magnetic flux increases. According to Lenz’s law, when the flux increases, there is a decrease in the current flow through the coil.