Electric current of 2A is flowing through the solenoid with 20000 turns. Solenoi

Question

Electric current of 2A is flowing through the solenoid with 20000 turns. Solenoid is 0.5m long. Assuming that the formula for infinitely long solenoid is a good approximation what is the magnetic field strength B inside the solenoid? Assume your answer is in Tesla but do not include units. Electric current of 2A is flowing through the solenoid with 20000 turns. Solenoid is 0.5m long. Assuming that the formula for infinitely long solenoid is a good approximation what is the magnetic field strength B inside the solenoid? Assume your answer is in Tesla but do not include units. Electric current of 2A is flowing through the solenoid with 20000 turns. Solenoid is 0.5m long. Assuming that the formula for infinitely long solenoid is a good approximation what is the magnetic field strength B inside the solenoid? Assume your answer is in Tesla but do not include units. A permanent magnet is placed in front of a solenoid and potential difference is applied to the two ends of the solenoid wire as shown. Will solenoid attract or repel the permanent magnet? A permanent magnet is placed in front of a solenoid and potential difference is applied to the two ends of the solenoid wire as shown. Will solenoid attract or repel the permanent magnet?

Explanation / Answer

solenoid will repel it...as effectively it will have a north pole in up direction

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