When there is a changing magnetic field around a closed circuit, as shown in the animation, an electric current is induced in the circuit. This phenomenon is known as Electromagnetic Induction. The greater the rate of change in magnetic field, the greater the electric current/voltage. So, in order to increase the magnitude of the current or the voltage, the following can be done: Strong magnets can be used More magnets can be used The number of turns of the solenoid can be increased Either the magnet or the coil or both can be moved faster A soft iron core can be inserted into the solenoid. Both the magnitude and the direction of the current/voltage generated this way changes with time.
When there is a changing magnetic field around a closed circuit, as shown in the animation, an electric current is induced in the circuit. This phenomenon is known as Electromagnetic Induction. The greater the rate of change in magnetic field, the greater the electric current/voltage. So, in order to increase the magnitude of the current or the voltage, the following can be done: Strong magnets can be used More magnets can be used The number of turns of the solenoid can be increased Either the magnet or the coil or both can be moved faster A soft iron core can be inserted into the solenoid. Both the magnitude and the direction of the current/voltage generated this way changes with time.
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